Fix bandit comments:

- suppress B301 in the single place where it appears,
  - fix placement of B607, B603 in proofofwork and B324 in bitmessagekivy.

src/bitmessagekivy/identiconGeneration.py

@@ -40,7 +40,8 @@ def generate_hash(string):
     try:
         # make input case insensitive
         string = str.lower(string)
-        hash_object = hashlib.md5(str.encode(string))  # nosec B324, B303
+        hash_object = hashlib.md5(  # nosec B324, B303
+            str.encode(string))
         print(hash_object.hexdigest())
         # returned object is a hex string
         return hash_object.hexdigest()

src/network/knownnodes.py

@@ -85,7 +85,7 @@ def pickle_deserialize_old_knownnodes(source):
     the new format is {Peer:{"lastseen":i, "rating":f}}
     """
     global knownNodes
-    knownNodes = pickle.load(source)
+    knownNodes = pickle.load(source)  # nosec B301
     for stream in knownNodes.keys():
         for node, params in knownNodes[stream].iteritems():
             if isinstance(params, (float, int)):

src/proofofwork.py

@@ -276,8 +276,8 @@ def buildCPoW():
                   '-f', 'Makefile.bsd'])  # nosec B607, B603
         else:
             # GNU make
-            call(["make", "-C", os.path.join(paths.codePath(),
+            call([  # nosec B607, B603
-                  "bitmsghash")])  # nosec B607, B603
+                "make", "-C", os.path.join(paths.codePath(), "bitmsghash")])
         if os.path.exists(os.path.join(paths.codePath(), "bitmsghash", "bitmsghash.so")):
             init()
             notifyBuild(True)