playback-test: fix seek crash

check that app->seek_format exists before seeking.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/1095>

diff --git a/tests/examples/playback/playback-test.c b/tests/examples/playback/playback-test.c
index d7907fc..350f338 100644 (file)
--- a/tests/examples/playback/playback-test.c
+++ b/tests/examples/playback/playback-test.c
@@ -654,6 +654,9 @@ advanced_seek_button_cb (GtkButton * button, PlaybackApp * app)
   const gchar *text;
   gchar *endptr;
 
+  if (!app->seek_format)
+    return;
+
   fmt = app->seek_format->value;
 
   text = gtk_entry_get_text (GTK_ENTRY (app->seek_entry));