QHostAddress hashing: use qHashBits

Instead of constructing a temporary QByteArray, which could conceivably
fail, to hash those bits.

Change-Id: I7de033f80b0e4431b7f1ffff13fa376302d9720f
Reviewed-by: Richard J. Moore <rich@kde.org>

src/network/kernel/qhostaddress.cpp

@@ -1129,7 +1129,7 @@ uint qHash(const QHostAddress &key, uint seed)
 {
     // both lines might throw
     QT_ENSURE_PARSED(&key);
-    return qHash(QByteArray::fromRawData(reinterpret_cast<const char *>(key.d->a6.c), 16), seed);
+    return qHashBits(key.d->a6.c, 16, seed);
 }
 
 #ifndef QT_NO_DATASTREAM