Basic check for null. Without this assert, you will crash if there is no nsILineBreakerFactory found. git-svn-id: svn://10.0.0.236/trunk@73316 18797224-902f-48f8-a5cc-f745e15eee43
Basic check for null. Without this assert, you will crash if there is no nsILineBreakerFactory found. git-svn-id: svn://10.0.0.236/trunk@73316 18797224-902f-48f8-a5cc-f745e15eee43