aclindsa/moneygo: internal/handlers/imports.go; 27 LoC

Found a possible issue in [aclindsa/moneygo](https://www.github.com/aclindsa/moneygo) at [internal/handlers/imports.go](https://github.com/aclindsa/moneygo/blob/285b6322392d7ea8459c8ce6446ca6b1bf7a0696/internal/handlers/imports.go#L150-L176)

Below is the message reported by the analyzer for this snippet of code. Beware that the analyzer only reports the first
issue it finds, so please do not limit your consideration to the contents of the below message.

> function call which takes a reference to imbalance at line 161 may start a goroutine

[Click here to see the code in its original context.](https://github.com/aclindsa/moneygo/blob/285b6322392d7ea8459c8ce6446ca6b1bf7a0696/internal/handlers/imports.go#L150-L176)

Click here to show the 27 line(s) of Go which triggered the analyzer.

```go
for imbalanced_security, imbalance := range imbalances {
if imbalance.Cmp(&zero) != 0 {
imbalanced_account, err := GetImbalanceAccount(tx, user.UserId, imbalanced_security)
if err != nil {
log.Print(err)
return NewError(999 /*Internal Error*/)
}

// Add new split to fixup imbalance
split := new(models.Split)
r := new(big.Rat)
r.Neg(&imbalance)
security, err := tx.GetSecurity(imbalanced_security, user.UserId)
if err != nil {
log.Print(err)
return NewError(999 /*Internal Error*/)
}
split.Amount.Rat = *r
if split.Amount.Precision() > security.Precision {
log.Printf("Precision on created imbalance-correction split (%d) greater than the underlying security (%s) allows (%d)", split.Amount.Precision(), security, security.Precision)
return NewError(999 /*Internal Error*/)
}
split.SecurityId = -1
split.AccountId = imbalanced_account.AccountId
transaction.Splits = append(transaction.Splits, split)
}
}

```

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commit ID: 285b6322392d7ea8459c8ce6446ca6b1bf7a0696