Fix T73265: GPencil console error when delete frist frame

source/blender/blenkernel/intern/gpencil.c

@@ -938,12 +938,18 @@ bGPDframe *BKE_gpencil_layer_getframe(bGPDlayer *gpl, int cframe, eGP_GetFrame_M
     else if (found) {
       gpl->actframe = gpf;
     }
+    else {
+      /* If delete first frame, need to find one. */
+      if (gpl->frames.first != NULL) {
+        gpl->actframe = gpl->frames.first;
+      }
       else {
         /* unresolved errogenous situation! */
         CLOG_STR_ERROR(&LOG, "cannot find appropriate gp-frame");
         /* gpl->actframe should still be NULL */
       }
     }
+  }
   else {
     /* currently no frames (add if allowed to) */
     if (addnew) {