Fixed wrong ext/filter behavior. It might not to register FastCGI environment variables and make memory leaks.

sapi/cgi/cgi_main.c

@@ -476,13 +476,14 @@ void cgi_php_import_environment_variables(zval *array_ptr TSRMLS_DC)
 		uint var_len;
 		char **val;
 		ulong idx;
+		int filter_arg = (array_ptr == PG(http_globals)[TRACK_VARS_ENV])?PARSE_ENV:PARSE_SERVER;
 
 		for (zend_hash_internal_pointer_reset_ex(&request->env, &pos);
 		     zend_hash_get_current_key_ex(&request->env, &var, &var_len, &idx, 0, &pos) == HASH_KEY_IS_STRING &&
 		     zend_hash_get_current_data_ex(&request->env, (void **) &val, &pos) == SUCCESS;
 		     zend_hash_move_forward_ex(&request->env, &pos)) {
-			int new_val_len;
-			if (sapi_module.input_filter(PARSE_SERVER, var.s, val, strlen(*val), &new_val_len TSRMLS_CC)) {
+			unsigned int new_val_len;
+			if (sapi_module.input_filter(filter_arg, var.s, val, strlen(*val), &new_val_len TSRMLS_CC)) {
 				php_register_variable_safe(var.s, *val, new_val_len, array_ptr TSRMLS_CC);
 			}
 		}
@@ -491,7 +492,7 @@ void cgi_php_import_environment_variables(zval *array_ptr TSRMLS_DC)
 
 static void sapi_cgi_register_variables(zval *track_vars_array TSRMLS_DC)
 {
-	int new_val_len;
+	unsigned int new_val_len;
 	char *val = SG(request_info).request_uri ? SG(request_info).request_uri : "";
 	/* In CGI mode, we consider the environment to be a part of the server
 	 * variables