Fix a bug on str_find_aux that causes infinite loop.

squirrel/lua-regex.c

@@ -422,7 +422,7 @@ eofunc:
           }
       }
       if(fp && (*fp)(ms, udata, 0)) {
-          init = result;
+          init = result+1;
           if (init < ls) goto do_again;
       }
   }