[tracker/wip/carlosg/wal-and-other-fixes: 3/8] libtracker-data: Fix possible invalid write

[Carlos Garnacho <carlosg src gnome org>]

commit bc877e56a7d7c4573ac997d64800702a0e26ab66
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sun Jun 28 11:14:10 2020 +0200

    libtracker-data: Fix possible invalid write
    
    If the last reference to the TrackerDBStatement is held by the "grab",
    we would end up destroying it here in the stmt_is_used paths, we shouldn't
    access its memory afterwards.

 src/libtracker-data/tracker-db-interface-sqlite.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/libtracker-data/tracker-db-interface-sqlite.c 
b/src/libtracker-data/tracker-db-interface-sqlite.c
index 20ad51610..5b36084a9 100644
--- a/src/libtracker-data/tracker-db-interface-sqlite.c
+++ b/src/libtracker-data/tracker-db-interface-sqlite.c
@@ -3001,14 +3001,14 @@ tracker_db_statement_sqlite_release (TrackerDBStatement *stmt)
 
        g_assert (stmt->stmt_is_owned);
 
+       stmt->stmt_is_owned = FALSE;
+
        if (stmt->stmt_is_used) {
                stmt->stmt_is_used = FALSE;
                tracker_db_statement_sqlite_reset (stmt);
                g_object_unref (stmt);
                g_object_unref (iface);
        }
-
-       stmt->stmt_is_owned = FALSE;
 }
 
 static void