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/resizor.c b/clients/resizor.c
index 49b2817..68e4bf9 100644
--- a/clients/resizor.c
+++ b/clients/resizor.c
@@ -233,9 +233,7 @@
 {
 	struct resizor *resizor;
 
-	resizor = xmalloc(sizeof *resizor);
-	memset(resizor, 0, sizeof *resizor);
-
+	resizor = xzalloc(sizeof *resizor);
 	resizor->window = window_create(display);
 	resizor->widget = frame_create(resizor->window, resizor);
 	window_set_title(resizor->window, "Wayland Resizor");