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/animation/animation_cache.cpp

@@ -309,7 +309,8 @@ void AnimationCache::set_all(float p_time, float p_delta) {
 				}
 
 			} break;
-			default: {}
+			default: {
+			}
 		}
 	}
 }