add guard clause when use g_VoiceControlClients

Change-Id: I36d7c0cccd8cee52a6948cbcf3af873e3ae950b9

diff --git a/common/vc_config_mgr.cpp b/common/vc_config_mgr.cpp
index 23a1fd1..e502e7e 100644 (file)
--- a/common/vc_config_mgr.cpp
+++ b/common/vc_config_mgr.cpp
@@ -105,6 +105,11 @@ static void notify_language_changed(const char* before_lang, const char* current
                return;
        }
 
+       if (nullptr == g_VoiceControlClients) {
+               SLOG(LOG_ERROR, vc_config_tag(), "[ERROR] No clients exist");
+               return;
+       }
+
        auto clients = g_VoiceControlClients->getClients();
        for (auto &clientInfo : clients) {
                if (false == g_VoiceControlClients->isUidValid(clientInfo.getUid())) {