package/ci: exclude destructor declarations from clang-cl code coverage.

This was already done in Magnum Extras, but because here the code
coverage is not 99.99% I never actually saw these. Until now, where both
Text::AbstractShaper and Text::AbstractGlyphCache report destructor
*declaration* as uncovered. Destructor definition is covered, obviously,
so reporting this as uncovered is wrong.

package/ci/appveyor-desktop.bat

@@ -91,8 +91,9 @@ rem Gather and upload coverage on the clang-cl MSVC 2022 build. Keep in sync
 rem with circleci.yml, appveyor-desktop-mingw.bat and PKBUILD-coverage, please.
 rem
 rem Additionally, Clang-cl often reports empty lines containing just } as
-rem uncovered, possibly due to exception handling, similarly to MinGW. Exclude
-rem them, and feel free to expand the regex to catch more cases if needed.
+rem uncovered, possibly due to exception handling, similarly to MinGW, and same
+rem for both virtual and non-virtual destructor declarations. Exclude them, and
+rem feel free to expand the regex to catch more cases if needed.
 rem
 rem Also, partially due to the above, where, if a code isn't run through at
 rem all, a lot more uncovered lines is reported compared to Linux / Mac, the
@@ -102,7 +103,7 @@ rem possible without an actual GL/Vk driver, but the false negatives far
 rem outweigh the benefits of having Windows-specific coverage reported for
 rem those -- there isn't any Windows-specific code for most of them, after all
 rem -- that it's not worth including them.
-if "%COMPILER%" == "msvc-clang" if "%APPVEYOR_BUILD_WORKER_IMAGE%" == "Visual Studio 2022" grcov build -t lcov --keep-only "*/src/Magnum*/*" --ignore "*/src/MagnumExternal/*" --ignore "*/Test/*" --ignore "*/build/src/*" --ignore "*/src/Magnum/GL/*" --ignore "*/src/Magnum/Vk/*" --ignore "*/src/Magnum/Platform/*" --ignore "*GL.cpp" --ignore "*GL.h" --ignore "*Vk.cpp" --ignore "*Vk.h" -o coverage.info --excl-line "(LCOV_EXCL_LINE|^\s*}$)" --excl-start LCOV_EXCL_START --excl-stop LCOV_EXCL_STOP || exit /b
+if "%COMPILER%" == "msvc-clang" if "%APPVEYOR_BUILD_WORKER_IMAGE%" == "Visual Studio 2022" grcov build -t lcov --keep-only "*/src/Magnum*/*" --ignore "*/src/MagnumExternal/*" --ignore "*/Test/*" --ignore "*/build/src/*" --ignore "*/src/Magnum/GL/*" --ignore "*/src/Magnum/Vk/*" --ignore "*/src/Magnum/Platform/*" --ignore "*GL.cpp" --ignore "*GL.h" --ignore "*Vk.cpp" --ignore "*Vk.h" -o coverage.info --excl-line "(LCOV_EXCL_LINE|^\s*}$|^\s+(virtual )?~[a-zA-Z0-9]+\(\);$)" --excl-start LCOV_EXCL_START --excl-stop LCOV_EXCL_STOP || exit /b
 rem Official docs say "not needed for public repos", in reality not using the
 rem token is "extremely flakey". What's best is that if the upload fails, the
 rem damn thing exits with a success error code, and nobody cares: