call $controller->commit() outside of foreach loop

[lyrapet]

Commit b3b00eb broke the TransactionalInterface Controller handling. It starts the transaction with $controller->beginTransaction() at the beginning, calls the $controller->commit() however multiple times inside the foreach loop which should only happen once at the end of the try...catch block because you can't commit a transaction more than once. This will throw if more than 1 model has been passed to a Controller which implements the TransactionalInterface.