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/src/shell.c b/src/shell.c
index 30b55c3..ebe9b9f 100644
--- a/src/shell.c
+++ b/src/shell.c
@@ -4443,11 +4443,10 @@
 	unsigned int i;
 	struct wl_event_loop *loop;
 
-	shell = malloc(sizeof *shell);
+	shell = zalloc(sizeof *shell);
 	if (shell == NULL)
 		return -1;
 
-	memset(shell, 0, sizeof *shell);
 	shell->compositor = ec;
 
 	shell->destroy_listener.notify = shell_destroy;