using QT_ROOT_DIR

Author: jankae

.github/workflows/Build.yml

@@ -67,7 +67,7 @@ jobs:
         run: |
           curl -o libusb.7z -L https://github.com/libusb/libusb/releases/download/v1.0.25/libusb-1.0.25.7z
           7z x libusb.7z -r -olibusb
-          Xcopy /E /I /Y libusb\include $env:QT_ROOT_DIR\include
+          Xcopy /E /I /Y libusb\include %QT_ROOT_DIR%\include
           Xcopy /E /I /Y libusb\MinGW64\static\libusb-1.0.a Software\LibreCAL-GUI
         shell: cmd