gnucash maint: [assistant-stock-transaction.cpp] more sanity checks

[Christopher Lam]

Updated	 via  https://github.com/Gnucash/gnucash/commit/c00cacda (commit)
	from  https://github.com/Gnucash/gnucash/commit/aca83513 (commit)



commit c00cacda16ffc7f5cd7a9d650a486cb292aad5e0
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Mon Mar 14 09:14:53 2022 +0800

    [assistant-stock-transaction.cpp] more sanity checks
    
    - stock amount must be positive. i.e. a negative stock amount during
    a regular BUY means a SELL. user must choose appropriate txn_type.
    
    - don't require account if zero-amount is allowable. eg fees.



Summary of changes:
 gnucash/gnome/assistant-stock-transaction.cpp | 4 ++++
 1 file changed, 4 insertions(+)