Fix wrong DNA alignment on arm{el,hf} and mipsel

Technically, pointers are to be padded with followup pointer.

source/blender/makesdna/DNA_gpencil_types.h

@@ -181,6 +181,7 @@ typedef struct bGPDstroke_Runtime {
 
   /** Original stroke (used to dereference evaluated data) */
   struct bGPDstroke *gps_orig;
+  void *_pad2;
 } bGPDstroke_Runtime;
 
 /* Grease-Pencil Annotations - 'Stroke'

source/blender/makesdna/DNA_scene_types.h

@@ -1793,6 +1793,7 @@ typedef struct Scene {
 
   /** Settings to be override by workspaces. */
   IDProperty *layer_properties;
+  void *_pad9;
 
   struct SceneDisplay display;
   struct SceneEEVEE eevee;