Merge d2415e54db2617848cd2d0ac194b4c722c93fca0 into 19c2d5c0d1d096e1014fb7be62116ee9025d0f56

```
ErrAbortHandler is a sentinel panic value to abort a handler.
While any panic from ServeHTTP aborts the response to the client, panicking with ErrAbortHandler also suppresses logging of a stack trace to the server's error log.
```

- CC - #1714
- similar to https://github.com/gorilla/handlers/pull/159/files
- Other PR: https://github.com/gin-gonic/gin/pull/2590

recovery.go

@@ -68,6 +68,9 @@ func CustomRecoveryWithWriter(out io.Writer, handle RecoveryFunc) HandlerFunc {
 						}
 					}
 				}
+				if errors.Is(err, http.ErrAbortHandler) {
+					brokenPipe = true
+				}
 				if logger != nil {
 					const stackSkip = 3
 					if brokenPipe {