fix logic err

diff --git a/src/switch_core_sqldb.c b/src/switch_core_sqldb.c
index 4ccdb97a809ea941ee0350dbe884203ce9c2c188..b250b737dd64da476360ee195204a2364653403c 100644 (file)
--- a/src/switch_core_sqldb.c
+++ b/src/switch_core_sqldb.c
@@ -2617,7 +2617,15 @@ SWITCH_DECLARE(int) switch_core_recovery_recover(const char *technology, const c
 
 SWITCH_DECLARE(switch_cache_db_handle_type_t) switch_core_dbtype(void)
 {
-       return sql_manager.qm ?  sql_manager.qm->event_db->type : SCDB_TYPE_CORE_DB;
+       switch_cache_db_handle_type_t type = SCDB_TYPE_CORE_DB;
+
+       switch_mutex_lock(sql_manager.ctl_mutex);
+       if (sql_manager.qm && sql_manager.qm->event_db) {
+               type = sql_manager.qm->event_db->type;
+       }
+       switch_mutex_unlock(sql_manager.ctl_mutex);
+
+       return type;
 }
 
 SWITCH_DECLARE(void) switch_core_sql_exec(const char *sql)