Fix IndexOutOfBounds Exception which is hit when one of the replica pair is down. Problematic code existed in assuming a uniform size for each replica in pathinfo string. Change-Id: I85377ba5549e0603fe86e8d787115004f50e0c6a BUG: 808009 Signed-off-by: Venky Shankar <vshankar@redhat.com> Reviewed-on: http://review.gluster.com/3087 Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: M S Vishwanath Bhat <vishwanath@gluster.com> Reviewed-by: M S Vishwanath Bhat <vishwanath@gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>