Fix crash issue when write_cb is NULL

Change-Id: I4dc116d88a8d527ffc865e2fbeeed17e5365fde3
Signed-off-by: Wootak Jung <wootak.jung@samsung.com>

diff --git a/src/bluetooth-gatt.c b/src/bluetooth-gatt.c
index fb72744..b485875 100644 (file)
--- a/src/bluetooth-gatt.c
+++ b/src/bluetooth-gatt.c
@@ -4210,8 +4210,10 @@ int bt_gatt_client_write_value(bt_gatt_h gatt_handle,
                        chr->write_user_data = user_data;
                }
 
-               if (chr->write_type == BT_GATT_WRITE_TYPE_WRITE_NO_RESPONSE)
-                       chr->write_cb(ret, gatt_handle, user_data);
+               if (chr->write_type == BT_GATT_WRITE_TYPE_WRITE_NO_RESPONSE) {
+                       if (chr->write_cb)
+                               chr->write_cb(ret, gatt_handle, user_data);
+               }
        } else if (c->type == BT_GATT_TYPE_DESCRIPTOR) {
                bt_gatt_descriptor_s *desc = (bt_gatt_descriptor_s *)gatt_handle;