[Fix] build: dist.sh: Only test header with clang -stdlib options when supported.

git-svn-id: https://source.openmpt.org/svn/openmpt/trunk/OpenMPT@25200 56274372-70c3-4bfc-bfc3-4c3a0b034d27

Author: manxorist

build/auto/dist.sh

@@ -223,7 +223,7 @@ function headercheck_cpp() {
 	HEADERCHECK_STDLIB="${4}"
 	HEADERCHECK_OPTIONS="${5}"
 	echo '#include <array>' > bin/empty.cpp
-	if ${HEADERCHECK_COMPILER} ${HEADERCHECK_STANDARD} -c bin/empty.cpp -o bin/empty.${HEADERCHECK_NAME}.out > /dev/null 2>&1 ; then
+	if ${HEADERCHECK_COMPILER} ${HEADERCHECK_STANDARD} ${HEADERCHECK_STDLIB} -c bin/empty.cpp -o bin/empty.${HEADERCHECK_NAME}.out > /dev/null 2>&1 ; then
 		echo '' > bin/headercheck.cpp
 		echo '#include "libopenmpt/libopenmpt.hpp"' >> bin/headercheck.cpp
 		echo 'int main() { return 0; }' >> bin/headercheck.cpp