Kfree can cope with a null argument, so drop null tests.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@ expression ptr; @@

- if (ptr != NULL) {
  kfree(ptr);
  ptr = NULL;
- }
// </smpl>

Signed-off-by: Julia Lawall <julia.law...@lip6.fr>

---
 drivers/staging/lustre/lustre/ldlm/ldlm_resource.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c 
b/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c
index 5922069..7149eda 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c
@@ -1137,10 +1137,8 @@ ldlm_resource_get(struct ldlm_namespace *ns, struct 
ldlm_resource *parent,
                        CERROR("%s: lvbo_init failed for resource %#llx:%#llx: 
rc = %d\n",
                               ns->ns_obd->obd_name, name->name[0],
                               name->name[1], rc);
-                       if (res->lr_lvb_data) {
-                               kfree(res->lr_lvb_data);
-                               res->lr_lvb_data = NULL;
-                       }
+                       kfree(res->lr_lvb_data);
+                       res->lr_lvb_data = NULL;
                        res->lr_lvb_len = rc;
                        mutex_unlock(&res->lr_lvb_mutex);
                        ldlm_resource_putref(res);

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