9083 replace regex implementation with tre

@@ -1642,11 +1642,11 @@
         *dstp = dst = (wchar_t *)malloc(len * sizeof (wchar_t));
         if (dst == NULL)
                 return (REG_ESPACE);
 
         if (rp == NULL || rpl == NULL || src == NULL || dst ==  NULL)
-                return (REG_EFATAL);
+                return (REG_BADPAT);
 
         glob = 0;       /* match count */
         ip = src;       /* source position */
         op = dst;       /* destination position */
         end = dst + len;