Use zalloc for structs

When allocating memory for structs, use zalloc instead of malloc.
This ensures the memory is zero-initialized, and reduces the risk
of forgetting to initialize all struct fields.

Signed-off-by: Simon Ser <contact@emersion.fr>

src/wayland-client.c

@@ -343,7 +343,7 @@ wl_display_create_queue(struct wl_display *display)
 {
 	struct wl_event_queue *queue;
 
-	queue = malloc(sizeof *queue);
+	queue = zalloc(sizeof *queue);
 	if (queue == NULL)
 		return NULL;