Bug 958897 - ssltunnel lives if mochitest killed. r=jmaher

[PATCH] Made Mochitest.runApp() clean up after itself in case of exception

testing/mochitest/runtests.py

@@ -907,6 +907,8 @@ class Mochitest(MochitestUtilsMixin):
     # copy env so we don't munge the caller's environment
     env = env.copy()
 
+    # make sure we clean up after ourselves.
+    try:
       # set process log environment variable
       tmpfd, processLog = tempfile.mkstemp(suffix='pidlog')
       os.close(tmpfd)
@@ -1045,6 +1047,7 @@ class Mochitest(MochitestUtilsMixin):
       if crashed or zombieProcesses:
         status = 1
 
+    finally:
       # cleanup
       if os.path.exists(processLog):
         os.remove(processLog)