kvcoord: assert sanity when tracking in-flight write

[andreimatei]

Release note: None

[cockroach-teamcity]

This change is 

[nvanbenschoten]

Reviewed 1 of 1 files at r1.
Reviewable status: complete! 1 of 0 LGTMs obtained (waiting on @andreimatei)

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pkg/kv/kvclient/kvcoord/txn_interceptor_pipeliner.go, line 564 at r1 (raw file):

				header := req.Header()
				tp.ifWrites.insert(header.Key, header.Sequence)
				// The request would better not be a ranged one, as we're only tracking

This comment seems a little off. would and are

[andreimatei]

bors r+

Reviewable status: complete! 1 of 0 LGTMs obtained (waiting on @andreimatei)

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pkg/kv/kvclient/kvcoord/txn_interceptor_pipeliner.go, line 564 at r1 (raw file):

Previously, nvanbenschoten (Nathan VanBenschoten) wrote…

This comment seems a little off. would and are

done

[craig]

Build succeeded:

• GitHub CI (Cockroach)