This prevents clean build when --enable-verbose-jtag-io is used. Change-Id: I5c9e6968cfa425b1f6f92f59156b6ae38cb9af18 Signed-off-by: Paul Fertser <fercerpav@gmail.com> Reviewed-on: http://openocd.zylin.com/3907 Tested-by: jenkins Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>tags/v0.10.0-rc1