Migrate from gdk_beep to gdk_desktop_beep.

gdk_beep is gone in GDK 3.

src/fe-gtk/chanlist.c

@@ -459,7 +459,7 @@ chanlist_join (GtkWidget * wid, server *serv)
 			g_snprintf (tbuf, sizeof (tbuf), "join %s", chan);
 			handle_command (serv->server_session, tbuf, FALSE);
 		} else
-			gdk_beep ();
+			gdk_display_beep (gdk_display_get_default ());
 		g_free (chan);
 	}
 }

src/fe-gtk/fe-gtk.c

@@ -698,7 +698,7 @@ fe_beep (session *sess)
 
 	if (ca_context_play (ca_con, 0, CA_PROP_EVENT_ID, "message-new-instant", NULL) != 0)
 #endif
-	gdk_beep ();
+	gdk_display_beep (gdk_display_get_default ());
 #endif
 }
 

src/fe-gtk/textgui.c

@@ -131,7 +131,7 @@ PrintTextRaw (void *xtbuf, unsigned char *text, int indent, time_t stamp)
 			{
 				beep_done = TRUE;
 				if (!prefs.hex_input_filter_beep)
-					gdk_beep ();
+					gdk_display_beep (gdk_display_get_default ());
 			}
 		default:
 			text++;