licenses.sh: Linux MuPDF fonts are objects under resources/fonts

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

packaging/licenses.sh

@@ -44,10 +44,15 @@ case $slug in
         parts=$(python3 "$root/packaging/windows/mupdf-parts.py" "$root/engines/mupdf-src" parts)
         families=$(python3 "$root/packaging/windows/mupdf-parts.py" "$root/engines/mupdf-src" fonts)
         ;;
-      *)
+      Darwin)
         parts=$(ls "$root/engines/mupdf-build/thirdparty")
         families=$(ls "$root/engines/mupdf-build/generated/resources/fonts")
         ;;
+      *)
+        # Linux links the font files in as objects.
+        parts=$(ls "$root/engines/mupdf-build/thirdparty")
+        families=$(ls "$root/engines/mupdf-build/resources/fonts")
+        ;;
     esac
     for name in $parts; do
       found=$(find "$root/engines/mupdf-src/thirdparty/$name" -maxdepth 1 -type f \