updated for version 7.3.542
Problem:    Function is sometimes unused.
Solution:   Add #ifdef.
diff --git a/src/gui_gtk.c b/src/gui_gtk.c
index eecd87b..5266dd7 100644
--- a/src/gui_gtk.c
+++ b/src/gui_gtk.c
@@ -90,11 +90,13 @@
 static void entry_activate_cb(GtkWidget *widget, gpointer data);
 static void entry_changed_cb(GtkWidget *entry, GtkWidget *dialog);
 static void find_replace_cb(GtkWidget *widget, gpointer data);
+#if defined(FEAT_BROWSE) || defined(PROTO)
 static void recent_func_log_func(
 	const gchar *log_domain,
 	GLogLevelFlags log_level,
 	const gchar *message,
 	gpointer user_data);
+#endif
 
 #if defined(FEAT_TOOLBAR)
 /*
@@ -1896,6 +1898,7 @@
     do_cmdline_cmd((char_u *)"emenu ToolBar.FindHelp");
 }
 
+#if defined(FEAT_BROWSE) || defined(PROTO)
     static void
 recent_func_log_func(const gchar *log_domain UNUSED,
 		     GLogLevelFlags log_level UNUSED,
@@ -1905,4 +1908,4 @@
     /* We just want to suppress the warnings. */
     /* http://bugzilla.gnome.org/show_bug.cgi?id=664587 */
 }
-
+#endif