This was inadvertently broken when Windows 9X support was
fixed in June 2024.
* src/w32uniscribe.c (syms_of_w32uniscribe_for_pdumper): Set
'uniscribe_available' non-zero in non-Cygwin builds. (Bug#73159)
(cherry picked from commit
9019536ea66ac0d47ea6f1ef690efd16e32c7ec4)
pfnScriptGetGlyphABCWidth = &ScriptGetGlyphABCWidth;
pfnScriptFreeCache = &ScriptFreeCache;
pfnScriptGetCMap = &ScriptGetCMap;
+#endif /* Cygwin */
uniscribe_available = 1;
-#endif /* Cygwin */
register_font_driver (&uniscribe_font_driver, NULL);