Fix build problem in C++11
https://github.com/php/php-src/commit/86b364380720005f4e460eb99317f4ddfef25c52
--- a/Zend/zend_API.h.orig
+++ b/Zend/zend_API.h
@@ -60,7 +60,7 @@ typedef struct _zend_fcall_info_cache {
 	zval *object_ptr;
 } zend_fcall_info_cache;
 
-#define ZEND_NS_NAME(ns, name)			ns"\\"name
+#define ZEND_NS_NAME(ns, name)			ns "\\" name
 
 #define ZEND_FN(name) zif_##name
 #define ZEND_MN(name) zim_##name