glcpp/tests/glcpp-test-cr-lf: error out if we cannot find any tests

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Acked-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>

src/compiler/glsl/glcpp/tests/glcpp-test-cr-lf.sh

@@ -133,6 +133,11 @@ done
     cp $abs_builddir/glsl/glcpp/tests/subtest-lf/"$base".out subtest-lf-cr/"$base".expected
 done
 
+run_test "${glcpp_test} --testdir=subtest-lf-cr"
+
+if [ $total -eq 0 ]; then
+    echo "Could not find any tests."
+    exit 1
 fi
 
 echo ""