Merge pull request #2301 from piotr1212/bytes

carbonlink: set the type of the recv buffer explicitly to bytes

webapp/graphite/carbonlink.py

@@ -180,7 +180,7 @@ def recv_response(self, conn):
 
   @staticmethod
   def recv_exactly(conn, num_bytes):
-    buf = ''
+    buf = b''
     while len(buf) < num_bytes:
       data = conn.recv(num_bytes - len(buf))
       if not data: