laforge has uploaded this change for review.

gsmtap_source_free(): Don't crash if NULL is passed

A function called *free() should always support passing a NULL input
value.

Change-Id: If0f6c11ac6ad987368e1d5c63a07fc456f89db2a
---
M src/core/gsmtap_util.c
1 file changed, 15 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/libosmocore refs/changes/31/33531/1

diff --git a/src/core/gsmtap_util.c b/src/core/gsmtap_util.c
index a95c795..20c0ce1 100644
--- a/src/core/gsmtap_util.c
+++ b/src/core/gsmtap_util.c
@@ -531,6 +531,9 @@
 
 void gsmtap_source_free(struct gsmtap_inst *gti)
 {
+	if (!gti)
+		return;
+
 	if (gti->ofd_wq_mode) {
 		osmo_fd_unregister(&gti->wq.bfd);
 		osmo_wqueue_clear(&gti->wq);

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