Fixing whitespace problems

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@111767 91177308-0d34-0410-b5e6-96231b3b80d8

test/utilities/time/time.duration/time.duration.arithmetic/op_--int.pass.cpp

@@ -1 +1,25 @@
-//===----------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// duration operator--(int);
+
+#include <chrono>
+#include <cassert>
+
+int main()
+{
+    std::chrono::hours h(3);
+    std::chrono::hours h2 = h--;
+    assert(h.count() == 2);
+    assert(h2.count() == 3);
+}