Fix a potential null pointer dereference issue

diff --git a/lib/helper.c b/lib/helper.c
index 81eedec08493682c4f9c57df82cc005334802194..0ba6d4f5d299a90c2f17229e94bf0dd35b3c0c0d 100644 (file)
--- a/lib/helper.c
+++ b/lib/helper.c
@@ -227,7 +227,8 @@ static void fuse_unmount_common(const char *mountpoint, struct fuse_chan *ch)
 {
        int fd = ch ? fuse_chan_fd(ch) : -1;
        fuse_kern_unmount(mountpoint, fd);
-       fuse_chan_destroy(ch);
+       if (ch)
+               fuse_chan_destroy(ch);
 }
 
 void fuse_unmount(const char *mountpoint, struct fuse_chan *ch)