Fixed bug when last symbol of comment was always returned if the 'traceback' text was not found in last_traceback_filter method

and the bot thought that two test fails with different tracebacks are similar and marked them with 100% similarity

Fixed-Bug: PRODX-37491

Change-Id: Ic23cf04c19f3b591e3af984d4dc25b51093f871f
1 file changed