Bug 922666 - Windows Mochitest "NameError: global name 'subprocess' is not defined" in killAndGetStack();r=edmorley

--HG--
extra : rebase_source : ad0fe201c5b1d6af79e2c60859f8f561e44708ca

testing/mochitest/runtests.py

@@ -23,6 +23,7 @@ import optparse
 import re
 import shutil
 import signal
+import subprocess
 import tempfile
 import time
 import traceback