lib/tdb: clang: Fix warning: Dereference of null pointer

Fixes:

lib/tdb/common/lock.c:933:6: warning: Dereference of null pointer <--[clang]
        if (tdb->allrecord_lock.count) {
            ^~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>

diff --git a/lib/tdb/common/lock.c b/lib/tdb/common/lock.c
index f55184d8be5ca368a4512913d773a69e545f0a48..5fba02f9b12dd879e5e1904bd09808a3b9b2f476 100644 (file)
--- a/lib/tdb/common/lock.c
+++ b/lib/tdb/common/lock.c
@@ -927,6 +927,9 @@ int tdb_lock_record(struct tdb_context *tdb, tdb_off_t off)
 int tdb_write_lock_record(struct tdb_context *tdb, tdb_off_t off)
 {
        struct tdb_traverse_lock *i;
+       if (tdb == NULL) {
+               return -1;
+       }
        for (i = &tdb->travlocks; i; i = i->next)
                if (i->off == off)
                        return -1;