Update libcxx/test/std/time/time.point/time.point.arithmetic/op_++.pass.cpp

Author: Zingam

libcxx/test/std/time/time.point/time.point.arithmetic/op_++.pass.cpp

@@ -29,7 +29,7 @@ constexpr bool test() {
 }
 
 int main(int, char**) {
-      test();
+  test();
   static_assert(test());
   return 0;
 }