This patch fixes issues 157, 426, 428, 431, 432, 437,439, 482 from [1]. [1] https://download.gluster.org/pub/gluster/glusterfs/static-analysis/master/glusterfs-coverity/2017-12-13-e255385a/html/ Change-Id: Iff9df12bd9802db29434155badb1beda045aba5b BUG: 789278 Signed-off-by: Sunny Kumar <sunkumar@redhat.com>