behavior if an absolute nonexistent path is listed for a helper in mailcap. Bugs 106380, 106381. r=law, sr=mscott git-svn-id: svn://10.0.0.236/trunk@106271 18797224-902f-48f8-a5cc-f745e15eee43
behavior if an absolute nonexistent path is listed for a helper in mailcap. Bugs 106380, 106381. r=law, sr=mscott git-svn-id: svn://10.0.0.236/trunk@106271 18797224-902f-48f8-a5cc-f745e15eee43