fix a bug in update if unable to open mp4 file, would cause a segfault

git-svn-id: https://svn.musicpd.org/mpd/trunk@1025 09075e82-0dd4-0310-85a5-a0d7c8717e4f

1 files changed, 1 insertions, 0 deletions

diff --git a/src/tag.c b/src/tag.c
index ccd7b421e..dd1ea852c 100644
--- a/src/tag.c
+++ b/src/tag.c
@@ -285,6 +285,7 @@ MpdTag * mp4TagDup(char * utf8file) {
 	int mp4MetadataFound = 0;
 
 	ret = mp4DataDup(utf8file,&mp4MetadataFound);
+        if(!ret) return NULL;
 	if(!mp4MetadataFound) {
 		MpdTag * temp = id3Dup(utf8file);
 		if(temp) {