Do not deref wp if window_get_active_at returns NULL which can happen on

very large terminals, from Michael Graczyk.

1 files changed, 4 insertions, 3 deletions

diff --git a/server-client.c b/server-client.c
index c5e93438..d2abd356 100644
--- a/server-client.c
+++ b/server-client.c
@@ -332,10 +332,11 @@ server_client_check_mouse(struct client *c)
 			where = BORDER;
 		else {
 			wp = window_get_active_at(s->curw->window, x, y);
-			if (wp != NULL)
+			if (wp != NULL) {
 				where = PANE;
-			log_debug("mouse at %u,%u is on pane %%%u", x, y,
-			    wp->id);
+				log_debug("mouse at %u,%u is on pane %%%u",
+				    x, y, wp->id);
+			}
 		}
 		if (where == NOWHERE)
 			return (KEYC_NONE);