Remove unused variable; tighten scope on another.

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@14194 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd
Fix bug in snap-to-album button causing missing/duplicate frames.

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@14195 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd