client: leaked stopper in TestPanicWithNilSender

[knz]

    stopper.go:98: leaked stopper, created at:
        goroutine 47 [running]:
        runtime/debug.Stack(0xc00008be60, 0x41d1b8, 0x30)
                /usr/local/go/src/runtime/debug/stack.go:24 +0x9f
        github.com/cockroachdb/cockroach/pkg/util/stop.register(0xc000416000)
                /go/src/github.com/cockroachdb/cockroach/pkg/util/stop/stopper.go:52 +0x45
        github.com/cockroachdb/cockroach/pkg/util/stop.NewStopper(0x0, 0x0, 0x0, 0x24b0400)
                /go/src/github.com/cockroachdb/cockroach/pkg/util/stop/stopper.go:189 +0x1ca
        github.com/cockroachdb/cockroach/pkg/internal/client/requestbatcher.TestPanicWithNilSender(0xc00048dc80)
                /go/src/github.com/cockroachdb/cockroach/pkg/internal/client/requestbatcher/batcher_test.go:556 +0xa5
        testing.tRunner(0xc00048dc80, 0x1990b98)
                /usr/local/go/src/testing/testing.go:1123 +0xef
        created by testing.(*T).Run
                /usr/local/go/src/testing/testing.go:1168 +0x2b3

[blathers-crl]

Hi @knz, I've guessed the C-ategory of your issue and suitably labeled it. Please re-label if inaccurate.

While you're here, please consider adding an A- label to help keep our repository tidy.

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