Fix the macro to prevent it from falling over in a mess

diff --git a/ext/standard/file.c b/ext/standard/file.c
index c952903463e024082758b51f8ac3ec46d12f93a1..8f0c5a6eb7b00dbfa85e5e785ee3a8b18b044939 100644 (file)
--- a/ext/standard/file.c
+++ b/ext/standard/file.c
@@ -1714,7 +1714,7 @@ PHPAPI PHP_FUNCTION(fread)
 # define _php_mblen(ptr, len) 1
 #else
 # if defined(_REENTRANT) && defined(HAVE_MBRLEN) && defined(HAVE_MBSTATE_T)
-#  define _php_mblen(ptr, len) (ptr == NULL ? mbsinit(&BG(mblen_state)): (int)mbrlen(ptr, len, &BG(mblen_state)))
+#  define _php_mblen(ptr, len) ((ptr) == NULL ? mbsinit(&BG(mblen_state)): (int)mbrlen(ptr, len, &BG(mblen_state)))
 # else
 #  define _php_mblen(ptr, len) mblen(ptr, len)
 # endif