put the ctx.DestroyDaprClient() into defer function

Signed-off-by: laminar <fangtian@kubesphere.io>

Author: tpiperatgod

context/context.go

@@ -435,6 +435,7 @@ func (ctx *FunctionContext) InitDaprClientIfNil() {
 
 		if ctx.daprClient == nil {
 			klog.Errorf("failed to init dapr client: %v", err)
+			panic(err)
 		}
 	}
 }

runtime/knative/knative.go

@@ -75,7 +75,6 @@ func (r *Runtime) RegisterOpenFunction(
 			return
 		}
 	})
-	ctx.DestroyDaprClient()
 	return nil
 }