Fix T74837: GPencil: Mirror over first selected marker crashes

'mirror_gpf_marker()' needs a NULL bGPDframe for initialization [but
still requires a scene to get the marker].

Maniphest Tasks: T74837

Differential Revision: https://developer.blender.org/D7166

1 files changed, 4 insertions, 4 deletions

diff --git a/source/blender/editors/gpencil/editaction_gpencil.c b/source/blender/editors/gpencil/editaction_gpencil.c
index 86355787b3c..7f659efb099 100644
--- a/source/blender/editors/gpencil/editaction_gpencil.c
+++ b/source/blender/editors/gpencil/editaction_gpencil.c
@@ -612,13 +612,13 @@ static short mirror_gpf_marker(bGPDframe *gpf, Scene *scene)
 
   /* In order for this mirror function to work without
    * any extra arguments being added, we use the case
-   * of bezt==NULL to denote that we should find the
+   * of gpf==NULL to denote that we should find the
    * marker to mirror over. The static pointer is safe
    * to use this way, as it will be set to null after
    * each cycle in which this is called.
    */
 
-  if (gpf) {
+  if (gpf != NULL) {
     /* mirroring time */
     if ((gpf->flag & GP_FRAME_SELECT) && (marker)) {
       diff = (marker->frame - gpf->framenum);
@@ -659,9 +659,9 @@ void ED_gplayer_mirror_frames(bGPDlayer *gpl, Scene *scene, short mode)
       ED_gplayer_frames_looper(gpl, scene, mirror_gpf_xaxis);
       break;
     case MIRROR_KEYS_MARKER: /* mirror over marker */
-      mirror_gpf_marker(NULL, NULL);
+      mirror_gpf_marker(NULL, scene);
       ED_gplayer_frames_looper(gpl, scene, mirror_gpf_marker);
-      mirror_gpf_marker(NULL, NULL);
+      mirror_gpf_marker(NULL, scene);
       break;
     default: /* just in case */
       ED_gplayer_frames_looper(gpl, scene, mirror_gpf_yaxis);