Fix PR92901: Change test expectation for C++ in OpenACC test clause-locations.c

The columns of the clause locations that are reported for C and C++ are
different and hence we need separate test expectations for both languages.

2019-12-11  Frederik Harwath  <frederik@codesourcery.com>

	PR other/92901
	/gcc/testsuite/
	* c-c++-common/clause-locations.c: Adjust test expectation for C++.

From-SVN: r279215