Correct variable access

Author: pcolby

.github/workflows/build.yaml

@@ -522,7 +522,7 @@ jobs:
           path: aqtinstall.log
           if-no-files-found: error
       - name: Install LCOV
-        if: toolchain != 'msvc'
+        if: matrix.toolchain != 'msvc'
         run: C:\msys64\usr\bin\pacman --sync --noconfirm --verbose mingw-w64-x86_64-lcov
       - name: Configure cross-compilation
         if: matrix.arch == 'arm64'
@@ -539,7 +539,7 @@ jobs:
       - name: Build
         env:
           CMAKE_MESSAGE_LOG_LEVEL: VERBOSE
-          ENABLE_COVERAGE: ${{ matrix.os == 'msvc' && 'false' || 'true' }}
+          ENABLE_COVERAGE: ${{ matrix.toolchain == 'msvc' && 'false' || 'true' }}
           PROJECT_BUILD_ID: ${{ github.run_number }}.win.${{ matrix.arch }}.${{ matrix.toolchain }}.qt-${{ matrix.qt }}
         run: |
           cmake -D CMAKE_BUILD_TYPE=Release ^
@@ -566,7 +566,7 @@ jobs:
         run: ctest --output-on-failure --test-dir "%RUNNER_TEMP%" --verbose
       - run: dir . /s
       - name: Collate test coverage
-        if: matrix.toolchain == 'msvc'
+        if: matrix.toolchain != 'msvc'
         run: cmake --build "%RUNNER_TEMP%" --target coverage
       - name: Upload test results
         if: matrix.arch != 'arm64' && fromJSON(steps.post-build.outputs.tap)