JIRA leaks DB connections

Component: entityengine
Class: GenericDAO.java
Method: selectListIteratorByCondition

Description:
In case an exception is thrown after the SQLProcessor instance is created, a database connection is leaked because the SQLProcessor instance is not closed.

Solution:
The code after the createion of the SQLProcessor instance must be in try-catch block intercepting GenericEntityException and RuntimeException.
In case of caught exception, the SQLProcessor instance must be closed and the exception re-thrown.

Affected versions:
This issue was discovered in our productive JIRA v. 6.1.3, but after looking at the source it is still present in 6.3.4