[GFS2] Fix build warning
[GFS2] Fix build warning

Signed-off-by: Fabio M. Di Nitto <2a6cdea7ef0235e0bb63b1ea9f60be6948e26834@fabbione.net>

asp24/resource-agents,stevenraspudic/resource-agents,asp24/resource-agents,asp24/resource-agents,stevenraspudic/resource-agents,stevenraspudic/resource-agents