fixed some bugs in yara.py
fixed some bugs in yara.py

Ma-Shell/Holmes-Totem,webstergd/Holmes-Totem,HolmesProcessing/Holmes-Totem,HolmesProcessing/Holmes-Totem,webstergd/Holmes-Totem,boddumanohar/Holmes-Totem,Ma-Shell/Holmes-Totem,webstergd/Holmes-Totem,Ma-Shell/Holmes-Totem,boddumanohar/Holmes-Totem,boddumanohar/Holmes-Totem,HolmesProcessing/Holmes-Totem