Add remaining sway allocation failure handling

sway/container.c

@@ -217,7 +217,7 @@ swayc_t *new_workspace(swayc_t *output, const char *name) {
 	workspace->y = output->y;
 	workspace->width = output->width;
 	workspace->height = output->height;
-	workspace->name = strdup(name);
+	workspace->name = !name ? NULL : strdup(name);
 	workspace->visible = false;
 	workspace->floating = create_list();
 

sway/workspace.c

@@ -121,6 +121,10 @@ char *workspace_next_name(const char *output_name) {
 		l = 3;
 	}
 	char *name = malloc(l + 1);
+	if (!name) {
+		sway_log(L_ERROR, "Could not allocate workspace name");
+		return NULL;
+	}
 	sprintf(name, "%d", ws_num++);
 	return name;
 }
@@ -279,6 +283,10 @@ bool workspace_switch(swayc_t *workspace) {
 				&& active_ws != workspace)) {
 		free(prev_workspace_name);
 		prev_workspace_name = malloc(strlen(active_ws->name) + 1);
+		if (!prev_workspace_name) {
+			sway_log(L_ERROR, "Unable to allocate previous workspace name");
+			return false;
+		}
 		strcpy(prev_workspace_name, active_ws->name);
 	}