[5.1] Decrement transaction count when beginTransaction errors#13551

Merged

taylorotwell merged 3 commits intolaravel:5.1from k-k:begin-transaction-fix

May 14, 2016

Commits on May 13, 2016

Decrements transactions count on beginTransaction exception
Keith Kirk
committed
Adds test cases for successful and failed beginTransaction calls
Keith Kirk
committed
Applies CS fix
Keith Kirk
committed