BLI_buffer: empty macro

source/blender/blenkernel/intern/pbvh_bmesh.c

@@ -883,7 +883,8 @@ static void pbvh_bmesh_collapse_edge(
 	/* Note: this could be done with BM_vert_splice(), but that
 	 * requires handling other issues like duplicate edges, so doesn't
 	 * really buy anything. */
-	deleted_faces->count = 0;
+	BLI_buffer_empty(deleted_faces);
+
 	BM_ITER_ELEM (f, &bm_iter, v_del, BM_FACES_OF_VERT) {
 		BMVert *v_tri[3];
 		BMFace *existing_face;

source/blender/blenlib/BLI_buffer.h

@@ -88,13 +88,15 @@ enum {
 #define BLI_buffer_resize_data(buffer_, type_, new_count_) ( \
 	(BLI_buffer_resize(buffer_, new_count_), new_count_ ? BLI_buffer_array(buffer_, type_) : NULL))
 
-
-
 #define BLI_buffer_append(buffer_, type_, val_)  ( \
 	BLI_buffer_resize(buffer_, (buffer_)->count + 1), \
 	(BLI_buffer_at(buffer_, type_, (buffer_)->count - 1) = val_) \
 )
 
+#define BLI_buffer_empty(buffer_) { \
+	(buffer_)->count = 0; \
+} (void)0
+
 /* Never decreases the amount of memory allocated */
 void BLI_buffer_resize(BLI_Buffer *buffer, int new_count);