QRingBuffer: overload append() for rvalues

The majority of append() callers in QtBase pass rvalues, so overload
append() to avoid the need for manipulating QBA's atomic ref counts.

Also adjust a caller that could pass by rvalue, but didn't, to do so.

Pick-to: 6.3
Change-Id: I3d9e60b0d04ef837bfdc526e1f0f691a151006f9
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/network/socket/qsocks5socketengine.cpp b/src/network/socket/qsocks5socketengine.cpp
index 884199581f..3708ce9df2 100644
--- a/src/network/socket/qsocks5socketengine.cpp
+++ b/src/network/socket/qsocks5socketengine.cpp
@@ -1190,7 +1190,7 @@ void QSocks5SocketEnginePrivate::_q_controlSocketReadNotification()
             }
             if (buf.size()) {
                 QSOCKS5_DEBUG << dump(buf);
-                connectData->readBuffer.append(buf);
+                connectData->readBuffer.append(std::move(buf));
                 emitReadNotification();
             }
             break;