QtNetwork: use const (and const APIs) more

For CoW types, prefer const methods to avoid needless detach()ing.

Mark predictNextRequest() as const, because this method
does not modify the object.

Change-Id: Ic94e2b31445ece46ab1423bf5b5f4e66d9a5b6ca
Reviewed-by: Edward Welbourne <edward.welbourne@theqtcompany.com>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/network/socket/qnativesocketengine_unix.cpp b/src/network/socket/qnativesocketengine_unix.cpp
index 6e6191154e..b3e456be69 100644
--- a/src/network/socket/qnativesocketengine_unix.cpp
+++ b/src/network/socket/qnativesocketengine_unix.cpp
@@ -625,7 +625,7 @@ static bool multicastMembershipHelper(QNativeSocketEnginePrivate *d,
         mreq4.imr_multiaddr.s_addr = htonl(groupAddress.toIPv4Address());
 
         if (interface.isValid()) {
-            QList<QNetworkAddressEntry> addressEntries = interface.addressEntries();
+            const QList<QNetworkAddressEntry> addressEntries = interface.addressEntries();
             if (!addressEntries.isEmpty()) {
                 QHostAddress firstIP = addressEntries.first().ip();
                 mreq4.imr_interface.s_addr = htonl(firstIP.toIPv4Address());