Incorrect cleanup stack usage in QNetworkConfigurationPrivate class

1) In configFromConnectionMethodL and updateConfigurationsL methods Qt class is pushed to the cleanup stack (only Symbian / CBased classes should be pushed to the cleanup stack)

QNetworkConfigurationPrivate* cpPriv = new QNetworkConfigurationPrivate();
CleanupStack::PushL(cpPriv);

2) In configFromConnectionMethodL exception in QString::fromUtf16 method call causes memory leak. QT_TRYCATCH_LEAVING macro should be used to convert the Qt code to leaving one so cleanup stack would work correctly.

CleanupStack::PushL(pName);
cpPriv->mappingName = QString::fromUtf16(pName->Ptr(),pName->Length());
CleanupStack::PopAndDestroy(pName);