gbproxy: Add gbprox_clear_patch_filter() (Coverity)
Add a separate function to clear the IMSI filter to be used instead of
gbprox_set_patch_filter(cfg, NULL, ...). Albeit it fixes a Coverity
issue (Unchecked return value), it is a false positive, since the
return value is always 0 in these cases. Nevertheless it is more
obvious what happens when an explicit clear function is called. Using
NULL as filter argument of gbprox_set_patch_filter still clears the
filter.
Fixes: Coverity CID 1231255
Sponsored-by: On-Waves ehf
diff --git a/openbsc/include/openbsc/gb_proxy.h b/openbsc/include/openbsc/gb_proxy.h
index 039a9a1..d6dde10 100644
--- a/openbsc/include/openbsc/gb_proxy.h
+++ b/openbsc/include/openbsc/gb_proxy.h
@@ -115,6 +115,7 @@
int gbprox_set_patch_filter(struct gbproxy_config *cfg, const char *filter,
const char **err_msg);
+void gbprox_clear_patch_filter(struct gbproxy_config *cfg);
void gbprox_delete_tlli(struct gbproxy_peer *peer,
struct gbproxy_tlli_info *tlli_info);