Commit
bb2cba83c5a336d1b8e03b3cb31b5c6b81bfb7b8
by laforgecommands.py: Resolve possible variable use before assignment
pySim/commands.py:608:39: E0606: Possibly using variable 'p2' before assignment (possibly-used-before-assignment)
Let's raise an exception in the erroneous case.
Change-Id: I23adf2e89aa8a13246cc20ef022c84f0113eb2cd