androsign.py Segmentation Fault about androguard HOT 1 OPEN

Debugging the code I discovered that segfault comes from similatiry.c:301 
inside entropy(). When segfault occurred size_orig was too long compared. I 
don't now what entropy exactly does, but in other times that it was called 
size_orig was always equal to strlen(c_orig) so I force size_orig to be equal 
to c_orig inside entropy. Besides i could detect that this problem was caused 
by this instruction "PyArg_ParseTuple( args, "s#", &input, &input_size );" at 
elsign.cc:1262 what seems to parse the tuple wrong, resulting in a wrong input 
size. I don't now what is the real impact of my changes but, doing what I've 
described androsign could detect malwares that were in Androguard database.