mgmt/glusterd: Out of bounds access to fs_info struct

Change-Id: Ibc75713d35c9cbafd493c8cf6b5294eaf29f05d4
BUG: 1163920
Signed-off-by: Petr Medonos <petr.medonos@etnetera.cz>
Reviewed-on: http://review.gluster.org/9126
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>

xlators/mgmt/glusterd/src/glusterd-utils.c

@@ -7293,7 +7293,7 @@ glusterd_add_inode_size_to_dict (dict_t *dict, int count)
         runinit (&runner);
         runner_redir (&runner, STDOUT_FILENO, RUN_PIPE);
 
-        for (fs = glusterd_fs ; glusterd_fs->fs_type_name; fs++) {
+        for (fs = glusterd_fs ; fs->fs_type_name; fs++) {
                 if (strcmp (fs_name, fs->fs_type_name) == 0) {
                         snprintf (fs_tool_name, sizeof fs_tool_name,
                                   "/usr/sbin/%s", fs->fs_tool_name);