Merge pull request kubernetes#65678 from hzxuzhonghu/patch-4

Automatic merge from submit-queue (batch tested with PRs 65593, 65678). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

simplify httplog.LogOf

**What this PR does / why we need it**:

LogOf returns the logger hiding in w， otherwise returns a passthroughLogger, and it never panics.

**Release note**:

```release-note
NONE
```

staging/src/k8s.io/apiserver/pkg/server/httplog/httplog.go

@@ -100,14 +100,11 @@ func NewLogged(req *http.Request, w *http.ResponseWriter) *respLogger {
 // then a passthroughLogger will be created which will log to stdout immediately
 // when Addf is called.
 func LogOf(req *http.Request, w http.ResponseWriter) logger {
-	if _, exists := w.(*respLogger); !exists {
-		pl := &passthroughLogger{}
-		return pl
-	}
 	if rl, ok := w.(*respLogger); ok {
 		return rl
 	}
-	panic("Unable to find or create the logger!")
+
+	return &passthroughLogger{}
 }
 
 // Unlogged returns the original ResponseWriter, or w if it is not our inserted logger.