fixed sub-shell use

Author: AlexHaxe

.github/workflows/checkstyle-linux.yml

@@ -49,8 +49,9 @@ jobs:
         cd ~/haxe/haxe_libraries/hxcpp/4.2.0/github/75b25c32b14a8989af59371589b00735e1630697/
         pwd
         npx haxelib dev hxcpp .
-        (cd tools/build; pwd; npx haxe compile.hxml)
-        (cd tools/hxcpp; pwd; npx haxe compile.hxml)
+        cd tools/hxcpp
+        pwd
+        npx haxe compile.hxml
     - name: Build neko versions
       run: |
         npx haxe build.hxml