QLocalSocket/Win: avoid double buffering on write

As QWindowsPipeWriter now maintains a chunk queue, there is no need to
use the internal QIODevice buffer and wait for the previous operation
to complete.

Change-Id: Id4d54edfe920aeb4a534980cb0cc85a56c067a70
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>

1 files changed, 1 insertions, 3 deletions

diff --git a/src/corelib/io/qiodevice.cpp b/src/corelib/io/qiodevice.cpp
index f3354cad65..3e3ee6e406 100644
--- a/src/corelib/io/qiodevice.cpp
+++ b/src/corelib/io/qiodevice.cpp
@@ -1763,9 +1763,7 @@ qint64 QIODevice::write(const QByteArray &data)
 */
 void QIODevicePrivate::write(const char *data, qint64 size)
 {
-    if (currentWriteChunk != nullptr
-        && currentWriteChunk->constData() == data
-        && currentWriteChunk->size() == size) {
+    if (isWriteChunkCached(data, size)) {
         // We are called from write(const QByteArray &) overload.
         // So, we can make a shallow copy of chunk.
         writeBuffer.append(*currentWriteChunk);