patch 9.1.1485: missing Wayland clipboard support

Problem:  missing Wayland clipboard support
Solution: make it work (Foxe Chen)

fixes: #5157
closes: #17097

Signed-off-by: Foxe Chen <chen.foxe@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/errors.h b/src/errors.h
index eddfc1b..042ab28 100644
--- a/src/errors.h
+++ b/src/errors.h
@@ -3732,3 +3732,7 @@
 	INIT(= N_("E1546: Cannot switch to a closing buffer"));
 EXTERN char e_cannot_not_support_redrawtabpanel[]
 	INIT(= N_("E1547: This version of Vim does support :redrawtabpanel"));
+#ifdef FEAT_WAYLAND
+EXTERN char e_wayland_connection_unavailable[]
+	INIT(= N_("E1548: Wayland connection is unavailable"));
+#endif