Fix build bustage from bug 445168 / changeset 5a153fc2dc6f

netwerk/protocol/http/src/nsHttpHandler.cpp

@@ -540,6 +540,7 @@ nsHttpHandler::GenerateHostPort(const nsCString& host, PRInt32 port,
         hostLine.Append(':');
         hostLine.AppendInt(port);
     }
+    return NS_OK;
 }
 
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