ovsdb: Always set *dbp to null on failure in ovsdb_file_open__().

Found via inspection.  I do not know that this fixes a real bug.

diff --git a/ovsdb/file.c b/ovsdb/file.c
index c61d5caa63b32c98ee6871b927d313e4398bec7b..0c842727461f45e9bc6392bd79c89ad1a8ca8e58 100644 (file)
--- a/ovsdb/file.c
+++ b/ovsdb/file.c
@@ -111,6 +111,7 @@ ovsdb_file_open__(const char *file_name,
     struct json *json;
     struct ovsdb *db;
 
+    *dbp = NULL;
     open_mode = read_only ? OVSDB_LOG_READ_ONLY : OVSDB_LOG_READ_WRITE;
     error = ovsdb_log_open(file_name, open_mode, -1, &log);
     if (error) {