fixup! fixup! (canonicalize_pathname_custom): fix --disable-charset…

… build broken in 8f723b8

Signed-off-by: Yury V. Zaytsev <yury@shurup.com>

.github/workflows/ci-alpine.yml

@@ -24,18 +24,20 @@ jobs:
       - name: Build default configuration
         run: |
           # Tests must be run as a non-root user
-          mkdir build-default && chown guest:users build-default && cd $_
+          adduser --home "$(pwd)/build-default" --no-create-home --disabled-password test users
 
-          sudo -u guest -i PWD="$PWD" \
+          mkdir build-default && chown test:users build-default && cd $_
+
+          sudo -u test -i \
             ../configure \
               --prefix="$(pwd)/install" \
               --enable-mclib \
               --enable-aspell \
               --disable-nls
 
-          sudo -u guest -i PWD="$PWD" make -j$(nproc)
-          sudo -u guest -i PWD="$PWD" make check
-          sudo -u guest -i PWD="$PWD" make install
+          sudo -u test -i make -j$(nproc)
+          sudo -u test -i make check
+          sudo -u test -i make install
 
       - uses: actions/upload-artifact@v4
         if: failure()