RoutingWidget.cpp: fix error about non-static const QString
RoutingWidget.cpp: fix error about non-static const QString

If 'info' remains as const an error is thrown that it has
to be a static member.

Signed-off-by: Lubomir I. Ivanov <2004c6db3645717963e9fcc331409c92645bd8b3@gmail.com>
Signed-off-by: Dirk Hohndel <a00b27378a09822d5638cdfb8c2e7ccc36d74c56@hohndel.org>

probonopd/marble,probonopd/marble,probonopd/marble,probonopd/marble,probonopd/marble,probonopd/marble,probonopd/marble