Throw an exception if default_dir not set, but required

Previously the RETURN_THROWS() assertion failed for this case.

Author: nikic

ext/standard/dir.c

@@ -74,8 +74,10 @@ static zend_class_entry *dir_class_entry_ptr;
 				RETURN_THROWS(); \
 			} \
 		} else { \
-			if (!DIRG(default_dir) || \
-				(dirp = (php_stream *)zend_fetch_resource(DIRG(default_dir), "Directory", php_file_le_stream())) == NULL) { \
+			if (!DIRG(default_dir)) { \
+				zend_type_error("No resource supplied"); \
+				RETURN_THROWS(); \
+			} else if ((dirp = (php_stream *)zend_fetch_resource(DIRG(default_dir), "Directory", php_file_le_stream())) == NULL) { \
 				RETURN_THROWS(); \
 			} \
 		} \

ext/standard/tests/dir/closedir_without_arg.phpt

@@ -0,0 +1,12 @@
+--TEST--
+Calling closedir() without argument and without opening a directory beforehand
+--FILE--
+<?php
+try {
+    closedir();
+} catch (TypeError $e) {
+    echo $e->getMessage(), "\n";
+}
+?>
+--EXPECT--
+No resource supplied