Cleanup: Rename ARegion variables from ar to region

The old convention was easy to confuse with ScrArea.
Part of https://developer.blender.org/T74432.

This is mostly a batch rename with some manual fixing. Only single word
variable names are changed, no prefixed/suffixed names.

Brecht van Lommel and Campbell Barton both gave me a green light for
this convention change.

Also ran clan clang format on affected files.

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/editors/space_outliner/outliner_collections.c b/source/blender/editors/space_outliner/outliner_collections.c
index 4e77d6940b0..f129bc9e2ea 100644
--- a/source/blender/editors/space_outliner/outliner_collections.c
+++ b/source/blender/editors/space_outliner/outliner_collections.c
@@ -176,7 +176,7 @@ static TreeTraversalAction collection_find_selected_to_add(TreeElement *te, void
 static int collection_new_exec(bContext *C, wmOperator *op)
 {
   SpaceOutliner *soops = CTX_wm_space_outliner(C);
-  ARegion *ar = CTX_wm_region(C);
+  ARegion *region = CTX_wm_region(C);
   Main *bmain = CTX_data_main(C);
   Scene *scene = CTX_data_scene(C);
   ViewLayer *view_layer = CTX_data_view_layer(C);
@@ -187,7 +187,7 @@ static int collection_new_exec(bContext *C, wmOperator *op)
   };
 
   if (RNA_boolean_get(op->ptr, "nested")) {
-    outliner_build_tree(bmain, scene, view_layer, soops, ar);
+    outliner_build_tree(bmain, scene, view_layer, soops, region);
 
     outliner_tree_traverse(
         soops, &soops->tree, 0, TSE_SELECTED, collection_find_selected_to_add, &data);