Cleanup: use plural names for Main lists

Convention was not to but after discussion on 918941483f7e we agree its
best to change the convention.

Names now mostly follow RNA.

Some exceptions:

- Use 'nodetrees' instead of 'nodegroups'
  since the struct is called NodeTree.
- Use 'gpencils' instead of 'grease_pencil'
  since 'gpencil' is a common abbreviation in the C code.

Other exceptions:

- Leave 'wm' as it's a list of one.
- Leave 'ipo' as is for versioning.

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/editors/animation/keyingsets.c b/source/blender/editors/animation/keyingsets.c
index aac7559774f..444e4634644 100644
--- a/source/blender/editors/animation/keyingsets.c
+++ b/source/blender/editors/animation/keyingsets.c
@@ -607,7 +607,7 @@ void ANIM_keyingset_info_unregister(Main *bmain, KeyingSetInfo *ksi)
 			BKE_keyingset_free(ks);
 			BLI_remlink(&builtin_keyingsets, ks);
 
-			for (scene = bmain->scene.first; scene; scene = scene->id.next)
+			for (scene = bmain->scenes.first; scene; scene = scene->id.next)
 				BLI_remlink_safe(&scene->keyingsets, ks);
 
 			MEM_freeN(ks);