From 2d260eada8608e727b6bdb567da74c08b07b004f Mon Sep 17 00:00:00 2001
From: Alex Trotsenko <alex1973tr@gmail.com>
Date: Fri, 5 Jan 2018 17:37:50 +0200
Subject: [PATCH] Micro-optimize QRingBuffer::free()

Change the condition to strong equal, as 'bytes' was checked against
wrong value on the start of the function.

Change-Id: I4ec4768b9fff3292af233417c4a5862d72d4eeac
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
---
 src/corelib/tools/qringbuffer.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/corelib/tools/qringbuffer.cpp b/src/corelib/tools/qringbuffer.cpp
index c9ef3bc69a..d1a4ce79cb 100644
--- a/src/corelib/tools/qringbuffer.cpp
+++ b/src/corelib/tools/qringbuffer.cpp
@@ -120,7 +120,7 @@ void QRingBuffer::free(qint64 bytes)
             // keep a single block around if it does not exceed
             // the basic block size, to avoid repeated allocations
             // between uses of the buffer
-            if (bufferSize <= bytes) {
+            if (bufferSize == bytes) {
                 if (chunk.capacity() <= basicBlockSize && !chunk.isShared()) {
                     chunk.reset();
                     bufferSize = 0;