Fixed bug CORE-4320 : Regression: isql crash when receiving statistics of execution of sql query

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59056 65644016-39b1-43b1-bf79-96bc8fe82c15
Fixed bug CORE-4319 : Engine crashes when trace config contains line "connection_id=NN" and we attempt to connect to non-existent database/alias

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59057 65644016-39b1-43b1-bf79-96bc8fe82c15