Changed argument name to residuals, since resid is a function already. Cleaned up the code.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/eventstudies@390 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Removed extra space.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/eventstudies@391 edb9625f-4e0d-4859-8d74-9fd3b1da38cb