logilab-astng #124360 python 3.3: crash on "yield from" [validation pending]

prioritynormal
typebug
done in0.24.3
load0.100
load left0.000
closed by#5b19a3c5b985 [py3.3] don't crash on 'yield from' nodes. Closes #124360
patch[py3.3] don't crash on 'yield from' nodes. Closes #124360 [applied]