Style: Apply new changes from clang-format 8.0

It seems to stay compatible with formatting done by clang-format 6.0 and 7.0,
so contributors can keep using those versions for now (they will not undo those
changes).

scene/resources/surface_tool.cpp

@@ -397,7 +397,8 @@ Array SurfaceTool::commit_to_arrays() {
 				a[i] = array;
 			} break;
 
-			default: {}
+			default: {
+			}
 		}
 	}