Cleanup: Simplify three functions in displist.c

A few related improvements to the three functions:
 - Reduce variable scope
 - Use for loops instead of while loops
 - Use const, bool instead of int
 - Generally make logic easier to read

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/blenkernel/BKE_displist.h b/source/blender/blenkernel/BKE_displist.h
index b2502031029..86145fdfb41 100644
--- a/source/blender/blenkernel/BKE_displist.h
+++ b/source/blender/blenkernel/BKE_displist.h
@@ -113,7 +113,7 @@ void BKE_displist_make_mball_forRender(struct Depsgraph *depsgraph,
                                        struct ListBase *dispbase);
 
 bool BKE_displist_surfindex_get(DispList *dl, int a, int *b, int *p1, int *p2, int *p3, int *p4);
-void BKE_displist_fill(struct ListBase *dispbase,
+void BKE_displist_fill(const struct ListBase *dispbase,
                        struct ListBase *to,
                        const float normal_proj[3],
                        const bool flipnormal);