When writing out a float value, the output string is encoded as QVariant
for no reason. Looks like an oversight when QMetaType::Float was added a
long time ago.
Fixes: QTBUG-21156
Change-Id: I7f5d31e15892d700c1b1e5e731b7733ce3a15730
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>