clang-format file in parent directories stops ale_fixer from working

by accident I found my clang-format fixer stops functioning, but I can run clang-format from command line just fine, after a while I found there is a file named clang-format in the parent directories(which is from clang-format --dump-config), as long as that file exists vim will not invoke the ale_fixer for C/C++, note .clang-format file is fine as expected, I have not full tested it so report this as an improvement here.