Missing sdk.Coins Validate Process for `msg.go`

[Hellobloc]

In the following code, you project miss the validation of the sdk.Coins which is a risky issue

fee-abstraction/x/feeabs/types/msg.go

Lines 106 to 119 in 37bdca2

	func (m MsgFundFeeAbsModuleAccount) ValidateBasic() error {
	_, err := sdk.AccAddressFromBech32(m.Sender)
	if err != nil {
	return err
	}
	return nil
	}
	func NewMsgFundFeeAbsModuleAccount(sender sdk.AccAddress, amount sdk.Coins) *MsgFundFeeAbsModuleAccount {
	return &MsgFundFeeAbsModuleAccount{
	Sender: sender.String(),
	Amount: amount,
	}
	}