Index: Lib/http/client.py
===================================================================
--- Lib/http/client.py	(revision 73692)
+++ Lib/http/client.py	(working copy)
@@ -488,6 +488,9 @@
             return b""
 
         if self.chunked:
+            # HEAD Request wont contain any data
+            if amt is None:
+                return b""
             return self._read_chunked(amt)
 
         if amt is None: