regex: clean code, use size_t instead of long

psys/include/p2c/regex.h

@@ -11,12 +11,12 @@
 extern void re_compile (char *ex, char *rex, char *chars);
 extern void re_cicompile (char *ex, char *rex, char *chars);
 extern void re_dump (char *rex);
-extern void re_search (char *s, char *rex, long *pos, long *last, long dir);
+extern void re_search (char *s, char *rex, size_t *pos, size_t *last, size_t dir);
 extern int re_compare (char *s, char *rex);
-extern void re_replace (char *s, char *rex, char *rpl, long *pos,
-			   long *last);
+extern void re_replace (char *s, char *rex, char *rpl, size_t *pos,
+			   size_t *last);
 extern int re_matchstr (char *s, char *pat);
-extern int re_matchsubstr (char *s, char *pat, long start, long *last);
+extern int re_matchsubstr (char *s, char *pat, size_t start, size_t *last);
 extern void re_grepl (char *s, char *pat, char *rpl);