Delete aegisub.desktop on distclean rather than clean since it's generate at configure time

2dc73668 · Thomas Goyne · 89d7e0a3 · 2dc73668
--- a/aegisub/desktop/Makefile
+++ b/aegisub/desktop/Makefile
@@ -46,6 +46,6 @@ install-icons:
 	$(BIN_CP) $(ICON_SCALABLE) $(DESTDIR)$(P_ICON)/hicolor/$(ICON_SCALABLE)


-CLEANFILES = aegisub.desktop
+DISTCLEANFILES = aegisub.desktop

 include ../Makefile.target