Fix more errcheck warnings.

[martinmr]

This change is 

[campoy]

Reviewed 6 of 6 files at r1.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @danielmai and @martinmr)

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contrib/integration/bank/main.go, line 173 at r1 (raw file):

	ctx := context.Background()
	txn := dg.NewTxn()
	defer func() { _ = txn.Discard(context.Background()) }()

Maybe you should actually log something if the error is not nil?
It will also make the code a bit less awkward.

Same for the similar change below.

[martinmr]

Reviewable status: 3 of 6 files reviewed, 1 unresolved discussion (waiting on @campoy and @danielmai)

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contrib/integration/bank/main.go, line 173 at r1 (raw file):

Previously, campoy (Francesc Campoy) wrote…

Maybe you should actually log something if the error is not nil?
It will also make the code a bit less awkward.

Same for the similar change below.

Done.

addressed review

[campoy]

Reviewed 3 of 3 files at r2.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @campoy and @danielmai)

[campoy]

Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @danielmai)