refactor(fund): Add t.Helper()

Signed-off-by: Sophia Koehler <[email protected]>

channel/test/fund.go

@@ -36,6 +36,7 @@ type FunderFinishTime struct {
 
 // FundAll calls fund for all funders simultaneously.
 func FundAll(ctx context.Context, t *testing.T, funders []*channel.Funder, reqs []*pchannel.FundingReq, egoisticIndex int) ([]FunderFinishTime, error) {
+	t.Helper()
 	finishTimes := make([]FunderFinishTime, len(funders))
 	var mutex sync.Mutex