Fix possible context leaks

pkg/schema/collection.go

@@ -150,6 +150,7 @@ func (c *Collection) startStopTemplate(schemas map[string]*types.APISchema) {
 
 		subCtx, cancel := context.WithCancel(c.ctx)
 		if err := template.Start(subCtx); err != nil {
+			cancel()
 			logrus.Errorf("failed to start schema template: %s", id)
 			continue
 		}

pkg/server/store/proxy/rbac_store.go

@@ -182,6 +182,7 @@ func (r *RBACStore) Watch(apiOp *types.APIRequest, schema *types.APISchema, w ty
 	}
 
 	ctx, cancel := context.WithCancel(apiOp.Context())
+	defer cancel()
 	apiOp = apiOp.WithContext(ctx)
 
 	eg := errgroup.Group{}