Description of problem:
When you provide only one or more "X" characters as handler_name_pattern when calling LMIIndicationListener.add_handler, IndexError("string index out of range") is raised from LMIIndicationListener.__create_handler_name


Version-Release number of selected component (if applicable):
openlmi-tools-0.9-16.fc20.noarch

How reproducible:
Always

Steps to Reproduce:
1. l = LMIIndicationListener(...)
2. l.handler("XX", ...)

Actual results:
IndexError("string index out of range")

Expected results:
If at least 8 "X" characters are given, unique name should be returned.
Otherwise, LMIHandlerNamePatternError should be raised.


Additional info:

In the offending code:

    while handler_name_pattern[pattern_len - 1 - x_cnt] == "X":
        x_cnt += 1

index is eventually -1.