rx: Don't crash when emptying an empty identity

In common with our other freeContents functions, freeing the contents
of a structure which is already empty shouldn't crash.

Change-Id: I93b54c0e450d2184c10575b50dadfd1471d43289
Reviewed-on: http://gerrit.openafs.org/3606
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Tested-by: Jeffrey Altman <jaltman@openafs.org>

diff --git a/src/rx/rx_identity.c b/src/rx/rx_identity.c
index 7f50ed038e21beeb8d2575b77331adc3ac9ac386..514d97be59c40c4bda5401ebcc6b1f79c2f6d1e8 100644 (file)
--- a/src/rx/rx_identity.c
+++ b/src/rx/rx_identity.c
@@ -164,8 +164,11 @@ rx_identity_new(rx_identity_kind kind, char *displayName, void *enameData,
 void
 rx_identity_freeContents(struct rx_identity *identity)
 {
-    rxi_Free(identity->displayName, strlen(identity->displayName));
-    identity->displayName = NULL;
+    if (identity->displayName) {
+       rxi_Free(identity->displayName, strlen(identity->displayName));
+       identity->displayName = NULL;
+    }
+
     rx_opaque_freeContents(&identity->exportedName);
 }