ITS#8321 Fix mdb_cursor_set

Always reinit mc_pg[0] if cursor is not C_INITIALIZED
It might have a stale value when using nested txns

diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index 43bc85d..5cddc3d 100644 (file)
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -5999,6 +5999,8 @@ mdb_cursor_set(MDB_cursor *mc, MDB_val *key, MDB_val *data,
                        } else
                                return MDB_NOTFOUND;
                }
+       } else {
+               mc->mc_pg[0] = 0;
        }
 
        rc = mdb_page_search(mc, key, 0);