Trying to fix Github actions 5.

.github/workflows/windows-msys.yml

@@ -9,6 +9,7 @@ jobs:
       run:
         shell: msys2 {0}
     steps:
+    - uses: actions/checkout@v2
     - uses: msys2/setup-msys2@v2
       with:
         update: true

ports/ci/windows-vs/deploy.bat

@@ -17,13 +17,6 @@ REM
 REM Web-Site: http://webcamoid.github.io/
 
 set SOURCES_DIR=%cd%
-
-if "%PLATFORM%" == "x86" (
-    set PYTHON_PATH=C:\%PYTHON_VERSION%
-) else (
-    set PYTHON_PATH=C:\%PYTHON_VERSION%-x64
-)
-
 set INSTALL_PREFIX=%SOURCES_DIR%\webcamoid-data
 set PACKAGES_DIR=%SOURCES_DIR%\webcamoid-packages
 
@@ -31,7 +24,7 @@ git clone https://github.com/webcamoid/DeployTools.git
 
 set PYTHONPATH=%cd%\DeployTools
 set BUILD_PATH=%cd%\build-x64
-%PYTHON_PATH%\python.exe DeployTools\deploy.py ^
+python DeployTools\deploy.py ^
     -d "%INSTALL_PREFIX%" ^
     -c "%BUILD_PATH%\package_info.conf" ^
     -o "%PACKAGES_DIR%"