Add runtime test to mingw CI

.github/workflows/windows.yml

@@ -28,43 +28,38 @@ on:
       - '.github/workflows/windows.yml'
 
 jobs:
-  mingw32:
-    name: "MinGW cross-compiler (32-bit)"
+  mingw:
+    name: "MinGW cross-compiler (${{ matrix.bits }}-bit)"
     runs-on: ubuntu-22.04
+    strategy:
+      fail-fast: false
+      matrix:
+        bits: [32, 64]
     steps:
       - uses: actions/checkout@v4
       - name: Install compiler
         run: |
-          sudo apt-get update && sudo apt-get install -y gettext
+          sudo dpkg --add-architecture i386
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends gettext wine wine${{ matrix.bits }}
           sudo ./util/buildbot/download_toolchain.sh /usr
 
       - name: Build
         run: |
-           EXISTING_MINETEST_DIR=$PWD ./util/buildbot/buildwin32.sh B
-
-      - uses: actions/upload-artifact@v4
-        with:
-          name: mingw32
-          path: B/build/*.zip
-          if-no-files-found: error
-
-  mingw64:
-    name: "MinGW cross-compiler (64-bit)"
-    runs-on: ubuntu-22.04
-    steps:
-      - uses: actions/checkout@v4
-      - name: Install compiler
-        run: |
-          sudo apt-get update && sudo apt-get install -y gettext
-          sudo ./util/buildbot/download_toolchain.sh /usr
+           EXISTING_MINETEST_DIR=$PWD \
+           ./util/buildbot/buildwin${{ matrix.bits }}.sh B
 
-      - name: Build
+      # Check that the resulting binary can run (DLLs etc.)
+      - name: Runtime test
         run: |
-          EXISTING_MINETEST_DIR=$PWD ./util/buildbot/buildwin64.sh B
+          dest=$(mktemp -d)
+          unzip -q -d "$dest" B/build/*.zip
+          cd "$dest"/minetest-*-win*
+          wine bin/minetest.exe --version
 
       - uses: actions/upload-artifact@v4
         with:
-          name: mingw64
+          name: "mingw${{ matrix.bits }}"
           path: B/build/*.zip
           if-no-files-found: error