move "Checkout Source Tree" to top of actions

.github/workflows/dos-djgpp.yml

@@ -33,6 +33,9 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
+      - name: Checkout Source Tree
+        uses: actions/checkout@v3
+
       - name: Setup build environment
         run: |
           sudo apt -y update
@@ -62,9 +65,6 @@ jobs:
           make && make install
           popd
 
-      - name: Checkout Source Tree
-        uses: actions/checkout@v3
-
       - name: Build
         run: |
           source ${{ github.workspace }}/djgpp/setenv

.github/workflows/windows.yml

@@ -45,6 +45,9 @@ jobs:
             msbuild-arch: x64
             cmake-args: ""
     steps:
+      - name: Checkout Source Tree
+        uses: actions/checkout@v3
+
       - name: Install Windows XP Support for Visual Studio
         uses: thepwrtank18/install-vs-components@v1.0.0
         with:
@@ -63,9 +66,6 @@ jobs:
           $installerArgs = '/silent', '/sp-', '/suppressmsgboxes', "/DIR=`"$installDir`""
           Start-Process -FilePath $installerPath -ArgumentList $installerArgs -Wait -PassThru
 
-      - name: Checkout Source Tree
-        uses: actions/checkout@v3
-
       - name: Setup MSBuild
         uses: microsoft/setup-msbuild@v1