Improve run ctests in build_simple.sh

Author: sea5kg

build_simple.sh

@@ -25,5 +25,5 @@ check_ret $? "configure"
 cmake --build ./tmp/linux_release --config Release
 check_ret $? "build"
 
-cd ./tmp/linux_release && ctest --output-on-failure
+cd ./tmp/linux_release && ctest --output-on-failure --build-config Release
 check_ret $? "tests"