lua-utils: let mrp_funcbridge_unref gracefully handle a NULL bridge.

diff --git a/src/core/lua-utils/funcbridge.c b/src/core/lua-utils/funcbridge.c
index 1b2b2a7..9bf1bc1 100644 (file)
--- a/src/core/lua-utils/funcbridge.c
+++ b/src/core/lua-utils/funcbridge.c
@@ -351,6 +351,9 @@ mrp_funcbridge_t *mrp_funcbridge_ref(lua_State *L, mrp_funcbridge_t *fb)
 
 void mrp_funcbridge_unref(lua_State *L, mrp_funcbridge_t *fb)
 {
+    if (fb == NULL)
+        return;
+
     if (fb->refcnt > 1)
         fb->refcnt--;
     else {