cluster/afr: Set right argument order for STACK_WIND_COOKIE

Change-Id: Ia26e17a7147ed825319c7c29880b9cf4ae80a48c
BUG: 1085259
Signed-off-by: Vijay Bellur <vbellur@redhat.com>
Reviewed-on: http://review.gluster.org/7416
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>