server: Fixed erroneous commit 3293 (original commit message was: Free byte...

server: Fixed erroneous commit 3293 (original commit message was: Free byte buffer in case of an error during readObject().)

git-svn-id: https://xtreemfs.googlecode.com/svn/trunk@3295 f8528748-c2c0-11dd-ba5c-d3b7c2b3b534