parseHTTPHeaders should return the number of consumed bytes.

Source/modules/websockets/WebSocketHandshake.cpp

 /*
  * Copyright (C) 2011 Google Inc.  All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 434 matching lines @@
 
 const char* WebSocketHandshake::readHTTPHeaders(const char* start, const char* end)
 {
     m_response.clearHeaderFields();
 
     AtomicString name;
     AtomicString value;
     bool sawSecWebSocketAcceptHeaderField = false;
     bool sawSecWebSocketProtocolHeaderField = false;
     const char* p = start;
-    for (; p < end; p++) {
+    while (p < end) {
         size_t consumedLength = parseHTTPHeader(p, end - p, m_failureReason, name, value);
         if (!consumedLength)
             return 0;
         p += consumedLength;
 
         // Stop once we consumed an empty line.
         if (name.isEmpty())
             break;
 
         // Sec-WebSocket-Extensions may be split. We parse and check the
@@ skipping 73 matching lines @@
             return false;
         }
     } else if (!m_clientProtocol.isEmpty()) {
         m_failureReason = formatHandshakeFailureReason("Sent non-empty 'Sec-WebSocket-Protocol' header but no response was received");
         return false;
     }
     return true;
 }
 
 } // namespace WebCore