Fixed typo (thanks Frank)

ext/standard/url.c

@@ -104,7 +104,7 @@ PHPAPI php_url *php_url_parse(char *str)
 			 * correctly parse things like a.com:80
 			 */
 			p = e + 1;
-			while (isdigit(p)) {
+			while (isdigit(*p)) {
 				p++;
 			}
 			
@@ -151,7 +151,7 @@ PHPAPI php_url *php_url_parse(char *str)
 		p = e + 1;
 		pp = p;
 		
-		while (pp-p < 6 && isdigit(pp)) {
+		while (pp-p < 6 && isdigit(*pp)) {
 			pp++;
 		}