TestGatewayWalletMsig fails because balance isn't spent

[Stebalien]

https://app.circleci.com/pipelines/github/filecoin-project/lotus/16949/workflows/d7f6185f-e0dc-4e28-b8d4-2cd5dabe121b/jobs/251104

2021-08-26T19:47:13.286Z	INFO	messagepool	messagepool/selection.go:89	message selection done	{"took": 0.001296693}
    assertion_compare.go:332: 
        	Error Trace:	gateway_test.go:133
        	Error:      	"1000" is not less than "1000"
        	Test:       	TestGatewayWalletMsig
        	Messages:   	[]

It's unclear why we'd expect the balance to be less than the initial balance as I don't see a spend in the test, but I have no idea what's going on here.

[dirkmc]

hmm I'm not sure either - the balance is less when I run this test locally: the balance varies each time I run the test but it's around 860. Maybe because of gas costs?

@Kubuxu do you have some insight?

[arajasek]

Closed in #8601