libmount: initialize tb in is_mounted_same_loopfile()

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/libmount/src/hook_loopdev.c b/libmount/src/hook_loopdev.c
index 22379cf72d34a740ec91330565c724f44159cf13..8c8f7f2187328e2f8bb8ae231ab75e8d562822ec 100644 (file)
--- a/libmount/src/hook_loopdev.c
+++ b/libmount/src/hook_loopdev.c
@@ -59,7 +59,7 @@ is_mounted_same_loopfile(struct libmnt_context *cxt,
                                    const char *backing_file,
                                    uint64_t offset)
 {
-       struct libmnt_table *tb;
+       struct libmnt_table *tb = NULL;
        struct libmnt_iter itr;
        struct libmnt_fs *fs;
        struct libmnt_cache *cache;