another -Wunsequenced topic

Here's a patch to fix several compilation errors coming from -Wunsequenced warnings:

Index: bin/ed/re.c
===================================================================
--- bin/ed/re.c	(revision 252372)
+++ bin/ed/re.c	(working copy)
_at__at_ -89,7 +89,7 _at__at_
  		default:
  			break;
  		case '[':
-			if ((nd = parse_char_class(++nd)) == NULL) {
+			if ((nd = parse_char_class(nd + 1)) == NULL) {
  				errmsg = "unbalanced brackets ([])";
  				return NULL;
  			}
Index: contrib/bmake/meta.c
===================================================================
--- contrib/bmake/meta.c	(revision 252372)
+++ contrib/bmake/meta.c	(working copy)
_at__at_ -1249,7 +1249,7 _at__at_
  				warnx("%s: %d: line truncated at %u", fname, lineno, x);
  				break;
  			    }
-			    cp = strchr(++cp, '\n');
+			    cp = strchr(cp + 1, '\n');
  			} while (cp);
  			if (buf[x - 1] == '\n')
  			    buf[x - 1] = '\0';
Index: lib/libfetch/fetch.c
===================================================================
--- lib/libfetch/fetch.c	(revision 252372)
+++ lib/libfetch/fetch.c	(working copy)
_at__at_ -376,7 +376,7 _at__at_
  
  		/* password */
  		if (*q == ':')
-			q = fetch_pctdecode(u->pwd, ++q, URL_PWDLEN);
+			q = fetch_pctdecode(u->pwd, q + 1, URL_PWDLEN);
  
  		p++;
  	} else {
Index: lib/libutil/login_times.c
===================================================================
--- lib/libutil/login_times.c	(revision 252372)
+++ lib/libutil/login_times.c	(working copy)
_at__at_ -96,7 +96,7 _at__at_
  	else
  	    m.lt_start = 0;
  	if (*p == '-')
-	    p = parse_time(++p, &m.lt_end);
+	    p = parse_time(p + 1, &m.lt_end);
  	else
  	    m.lt_end = 1440;
  
Index: usr.sbin/newsyslog/newsyslog.c
===================================================================
--- usr.sbin/newsyslog/newsyslog.c	(revision 252372)
+++ usr.sbin/newsyslog/newsyslog.c	(working copy)
_at__at_ -1083,7 +1083,7 _at__at_
  		 * at any time, etc).
  		 */
  		if (strcasecmp(DEBUG_MARKER, q) == 0) {
-			q = parse = missing_field(sob(++parse), errline);
+			q = parse = missing_field(sob(parse + 1), errline);
  			parse = son(parse);
  			if (!*parse)
  				warnx("debug line specifies no option:\n%s",
_at__at_ -1096,7 +1096,7 _at__at_
  		} else if (strcasecmp(INCLUDE_MARKER, q) == 0) {
  			if (verbose)
  				printf("Found: %s", errline);
-			q = parse = missing_field(sob(++parse), errline);
+			q = parse = missing_field(sob(parse + 1), errline);
  			parse = son(parse);
  			if (!*parse) {
  				warnx("include line missing argument:\n%s",
_at__at_ -1138,7 +1138,7 _at__at_
  			defconf_p = working;
  		}
  
-		q = parse = missing_field(sob(++parse), errline);
+		q = parse = missing_field(sob(parse + 1), errline);
  		parse = son(parse);
  		if (!*parse)
  			errx(1, "malformed line (missing fields):\n%s",
_at__at_ -1172,7 +1172,7 _at__at_
  			} else
  				working->gid = (gid_t)-1;
  
-			q = parse = missing_field(sob(++parse), errline);
+			q = parse = missing_field(sob(parse + 1), errline);
  			parse = son(parse);
  			if (!*parse)
  				errx(1, "malformed line (missing fields):\n%s",
_at__at_ -1187,7 +1187,7 _at__at_
  			errx(1, "error in config file; bad permissions:\n%s",
  			    errline);
  
-		q = parse = missing_field(sob(++parse), errline);
+		q = parse = missing_field(sob(parse + 1), errline);
  		parse = son(parse);
  		if (!*parse)
  			errx(1, "malformed line (missing fields):\n%s",
_at__at_ -1197,7 +1197,7 _at__at_
  			errx(1, "error in config file; bad value for count of logs to save:\n%s",
  			    errline);
  
-		q = parse = missing_field(sob(++parse), errline);
+		q = parse = missing_field(sob(parse + 1), errline);
  		parse = son(parse);
  		if (!*parse)
  			errx(1, "malformed line (missing fields):\n%s",
_at__at_ -1215,7 +1215,7 _at__at_
  
  		working->flags = 0;
  		working->compress = COMPRESS_NONE;
-		q = parse = missing_field(sob(++parse), errline);
+		q = parse = missing_field(sob(parse + 1), errline);
  		parse = son(parse);
  		eol = !*parse;
  		*parse = '\0';
_at__at_ -1257,7 +1257,7 _at__at_
  		if (eol)
  			q = NULL;
  		else {
-			q = parse = sob(++parse);	/* Optional field */
+			q = parse = sob(parse + 1);	/* Optional field */
  			parse = son(parse);
  			if (!*parse)
  				eol = 1;
_at__at_ -1327,7 +1327,7 _at__at_
  		if (eol)
  			q = NULL;
  		else {
-			q = parse = sob(++parse);	/* Optional field */
+			q = parse = sob(parse + 1);	/* Optional field */
  			parse = son(parse);
  			if (!*parse)
  				eol = 1;
_at__at_ -1348,7 +1348,7 _at__at_
  		if (eol)
  			q = NULL;
  		else {
-			q = parse = sob(++parse);	/* Optional field */
+			q = parse = sob(parse + 1);	/* Optional field */
  			*(parse = son(parse)) = '\0';
  		}
  
Index: usr.sbin/pw/pw_user.c
===================================================================
--- usr.sbin/pw/pw_user.c	(revision 252372)
+++ usr.sbin/pw/pw_user.c	(working copy)
_at__at_ -200,7 +200,7 _at__at_
  			strlcpy(dbuf, cnf->home, sizeof(dbuf));
  			p = dbuf;
  			if (stat(dbuf, &st) == -1) {
-				while ((p = strchr(++p, '/')) != NULL) {
+				while ((p = strchr(p + 1, '/')) != NULL) {
  					*p = '\0';
  					if (stat(dbuf, &st) == -1) {
  						if (mkdir(dbuf, _DEF_DIRMODE) == -1)