parseHTTPHeaders should return the number of consumed bytes.

Source/modules/websockets/WebSocketHandshake.cpp

Index: Source/modules/websockets/WebSocketHandshake.cpp
diff --git a/Source/modules/websockets/WebSocketHandshake.cpp b/Source/modules/websockets/WebSocketHandshake.cpp
index 5b920aff4d0c4fc578b2d93fbf5699731da9016a..84d97869282f2c3124d149da30945719a3242604 100644
--- a/Source/modules/websockets/WebSocketHandshake.cpp
+++ b/Source/modules/websockets/WebSocketHandshake.cpp
@@ -452,7 +452,7 @@ const char* WebSocketHandshake::readHTTPHeaders(const char* start, const char* e
     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;