clang: Fix Null pointer passed as argument warning

Fixes:
lib/tdb/common/transaction.c:354:2: warning: Null pointer passed as an argument to a 'nonnull' parameter <--[clang]
        memcpy(tdb->transaction->blocks[blk] + off, buf, len);
&

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

diff --git a/lib/tdb/common/transaction.c b/lib/tdb/common/transaction.c
index b67f84f215d8beca87ff0a01ffe93adc0a1aab79..290451b328555d25fd1398637e66c2da5eca50eb 100644 (file)
--- a/lib/tdb/common/transaction.c
+++ b/lib/tdb/common/transaction.c
@@ -330,7 +330,7 @@ static int transaction_write_existing(struct tdb_context *tdb, tdb_off_t off,
                }
        }
 
-       if (len == 0) {
+       if (len == 0 || buf == NULL) {
                return 0;
        }