Fix some preprocessor directives that were generating warnings in the test suite.

llvm-svn: 235999

Author: mclow

libcxx/test/libcxx/experimental/utilities/ratio/header.ratio.synop/includes.pass.cpp

@@ -13,7 +13,7 @@
 
 #include <experimental/ratio>
 
-#ifndef _LIBCPP_STD_VER > 11
+#if _LIBCPP_STD_VER > 11
 # ifndef _LIBCPP_RATIO
 #   error " <experimental/ratio> must include <ratio>"
 # endif

libcxx/test/libcxx/experimental/utilities/syserror/header.system_error.synop/includes.pass.cpp

@@ -11,7 +11,7 @@
 
 #include <experimental/system_error>
 
-#ifndef _LIBCPP_STD_VER > 11
+#if _LIBCPP_STD_VER > 11
 # ifndef _LIBCPP_SYSTEM_ERROR
 #   error "<experimental/system_error> must include <system_error>"
 # endif