[srrietveld bug] add parameter

[dif...@diffpy.org]

reporter: monica....@unimi.it

summary: add parameter

description: hi guys
I was trying to add a parameter to all steps of the refinement and it crashed

component: srrietveld

version: 1.0beta-r6746-20110902

traceback:
Traceback (most recent call last):
File "C:\xray\srRietveld\Python26\lib\site-packages\diffpy.srrietveld-1.0beta_r6746_20110902-py2.6.egg\diffpy\srrietveld\gui\errorwrapper.py", line 61, in _f
return func(*args, **kwargs)
File "C:\xray\srRietveld\Python26\lib\site-packages\diffpy.srrietveld-1.0beta_r6746_20110902-py2.6.egg\diffpy\srrietveld\gui\mainframe.py", line 2106, in onTurnOnParam
fitobj.addParamToStrategy(dp, step)
File "C:\xray\srRietveld\Python26\lib\site-packages\diffpy.srrietveld-1.0beta_r6746_20110902-py2.6.egg\diffpy\srrietveld\refinement.py", line 84, in addParamToStrategy
self.setStrategy(strategy.strategy)
UnboundLocalError: local variable 'strategy' referenced before assignment