return after disconnect ipc client and minor checks

sway/ipc.c

@@ -253,7 +253,7 @@ void ipc_client_handle_command(struct ipc_client *client) {
 	default:
 		sway_log(L_INFO, "Unknown IPC command type %i", client->current_command);
 		ipc_client_disconnect(client);
-		break;
+		return;
 	}
 
 	client->payload_length = 0;

sway/resize.c

@@ -20,7 +20,7 @@ bool resize_tiled(int amount, bool use_width) {
 		int lnumber = 0;
 		int rnumber = 0;
 		while (parent->parent) {
-			if (parent->parent->layout == L_HORIZ) {
+			if (parent->parent->layout == L_HORIZ && parent->parent->children) {
 				for (i = 0; i < parent->parent->children->length; i++) {
 					sibling = parent->parent->children->items[i];
 					if (sibling->x != focused->x) {
@@ -143,7 +143,7 @@ bool resize_tiled(int amount, bool use_width) {
 			}
 			parent = parent->parent;
 		}
-		if (parent == &root_container) {
+		if (parent->parent == NULL || parent->parent->children == NULL) {
 			return true;
 		}
 		sway_log(L_DEBUG, "Found the proper parent: %p. It has %d b conts, and %d t conts", parent->parent, bnumber, tnumber);