In map2cam, fixed an issue that caused this program to trim output images...

In map2cam, fixed an issue that caused this program to trim output images erroneously. This problem, and the recommended solution, was provided by Jeff Anderson. Fixes #984.

git-svn-id: http://subversion.wr.usgs.gov/repos/prog/isis3/trunk@5006 41f8697f-d340-4b68-9986-7bafba869bb8