bug#12568: 24.2.50; semantic parser and python conditional expressions

[Stefan Reichör]

In GNU Emacs 24.2.50.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.24.10)
 of 2012-09-20 on ubu
Windowing system distributor `The X.Org Foundation', version 11.0.11103000
Configured using:
 `configure '--prefix=/home/srei/prg/stow/emacs''

How to reproduce the bug:
C-x C-f 1.py RET
M-x semantic-mode RET

>>> file content for 1.py
etags_cmd = "c:/emacs/bin/etags.exe" if cRunningOnWindows else "etags"
>>> end file content

This gives the following error:

Idle Parse Error: "#<buffer 1.py> - wisent-python-lexer: endless loop at 13, 
after (STRING_LITERAL 13 . 13)"