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-rw-r--r--src/network/access/qnetworkrequest.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/network/access/qnetworkrequest.cpp b/src/network/access/qnetworkrequest.cpp
index 94e2b437b3..558e015ae4 100644
--- a/src/network/access/qnetworkrequest.cpp
+++ b/src/network/access/qnetworkrequest.cpp
@@ -919,6 +919,7 @@ QNetworkHeadersPrivate::RawHeadersList QNetworkHeadersPrivate::allRawHeaders() c
QList<QByteArray> QNetworkHeadersPrivate::rawHeadersKeys() const
{
QList<QByteArray> result;
+ result.reserve(rawHeaders.size());
RawHeadersList::ConstIterator it = rawHeaders.constBegin(),
end = rawHeaders.constEnd();
for ( ; it != end; ++it)