Fix compiler warning in TimerDemo.c that is only seen when the file is compiled on 8 bit devices.
Fix compiler warning in TimerDemo.c that is only seen when the file is compiled on 8 bit devices.

git-svn-id: 43aea61533866f88f23079d48f4f5dc2d5288937@1635 1d2547de-c912-0410-9cb9-b8ca96c0e9e2

kubostech/KubOS,kubostech/KubOS,Psykar/kubos,Psykar/kubos,Psykar/kubos,Psykar/kubos,Psykar/kubos,Psykar/kubos,Psykar/kubos