malloc + memset -> zalloc

And for clients using the xmalloc helper, use xzalloc.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
diff --git a/clients/clickdot.c b/clients/clickdot.c
index c5fbc64..aebe4db 100644
--- a/clients/clickdot.c
+++ b/clients/clickdot.c
@@ -247,9 +247,7 @@
 {
 	struct clickdot *clickdot;
 
-	clickdot = xmalloc(sizeof *clickdot);
-	memset(clickdot, 0, sizeof *clickdot);
-
+	clickdot = xzalloc(sizeof *clickdot);
 	clickdot->window = window_create(display);
 	clickdot->widget = frame_create(clickdot->window, clickdot);
 	window_set_title(clickdot->window, "Wayland ClickDot");