build: Fix variable name for gtk4-update-icon-cache target

diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index 9c481dc0357fe7f43493da2f54d6317f0ad162e7..94f3103cb728892bfc3736ae5bb68c7355dc1feb 100644 (file)
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -1634,7 +1634,7 @@ $(GTK_UPDATE_ICON_CACHE_RC):
 $(GTK_UPDATE_ICON_CACHE_MANIFEST_OBJECT): $(GTK_UPDATE_ICON_CACHE_RC) $(GTK_UPDATE_ICON_CACHE_MANIFEST)
        $(WINDRES) --input $< --output $@ --output-format=coff
 
-gtk_update_icon_cache_LDADD += $(GTK_UPDATE_ICON_CACHE_MANIFEST_OBJECT)
+gtk4_update_icon_cache_LDADD += $(GTK_UPDATE_ICON_CACHE_MANIFEST_OBJECT)
 
 endif