Cleanup: Rename ScrArea variables from sa to area

Follow up of b2ee1770d4c3 and 10c2254d412d, part of T74432.
Now the area and region naming conventions should be less confusing.

Mostly a careful batch rename but had to do few smaller fixes.

Also ran clang-format on affected files.

1 files changed, 3 insertions, 3 deletions

diff --git a/source/blender/makesrna/intern/rna_sculpt_paint.c b/source/blender/makesrna/intern/rna_sculpt_paint.c
index f2d5c465dac..345d5ecf007 100644
--- a/source/blender/makesrna/intern/rna_sculpt_paint.c
+++ b/source/blender/makesrna/intern/rna_sculpt_paint.c
@@ -511,10 +511,10 @@ static void rna_ImaPaint_canvas_update(bContext *C, PointerRNA *UNUSED(ptr))
   Image *ima = scene->toolsettings->imapaint.canvas;
 
   for (sc = bmain->screens.first; sc; sc = sc->id.next) {
-    ScrArea *sa;
-    for (sa = sc->areabase.first; sa; sa = sa->next) {
+    ScrArea *area;
+    for (area = sc->areabase.first; area; area = area->next) {
       SpaceLink *slink;
-      for (slink = sa->spacedata.first; slink; slink = slink->next) {
+      for (slink = area->spacedata.first; slink; slink = slink->next) {
         if (slink->spacetype == SPACE_IMAGE) {
           SpaceImage *sima = (SpaceImage *)slink;