Fix Build
Fix Build

isspace is in std namespace.

Change-Id: Idc5f09c5c60df874fac9c91bb3a3538f4bea0998
Reviewed-by: Stephen Kelly <b039a7232b458ac8785f8e91519ad165c3ac28cd@kdab.com>

mer-qt/qttools,mer-qt/qttools,mer-qt/qttools,mer-qt/qttools,mer-qt/qttools,mer-qt/qttools