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tsweb: don't panic if we get a tsweb.Error with no embedded error.

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It's technically weird to return a tsweb.Error with no child err,
but it's a sensible thing to want to do, and we shouldn't panic
if it happens.

Signed-off-by: David Anderson <dave@natulte.net>
This commit is contained in:
David Anderson 2020-04-03 10:35:31 -07:00
parent 2f8719741e
commit 2c2dff9559
1 changed files with 3 additions and 1 deletions
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4
tsweb/tsweb.go
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@ -219,7 +219,9 @@ func (h handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
case hErrOK:
// Handler asked us to send an error. Do so, if we haven't
// already sent a response.
msg.Err = hErr.Err.Error()
if hErr.Err != nil {
msg.Err = hErr.Err.Error()
}
if lw.code != 0 {
h.logf("[unexpected] handler returned HTTPError %v, but already sent a response with code %d", hErr, lw.code)
break