Return read/write client if on read-only clients exist

Author: mythz

src/ServiceStack.Redis/BasicRedisClientManager.cs

@@ -107,6 +107,9 @@ public IRedisClient GetClient()
         /// <returns></returns>
         public virtual IRedisClient GetReadOnlyClient()
         {
+            if (ReadOnlyHosts.Count == 0)
+                return this.GetClient();
+
             var nextHost = ReadOnlyHosts[readOnlyHostsIndex++ % ReadOnlyHosts.Count];
             var client = InitNewClient(nextHost);
             return client;

src/ServiceStack.Redis/PooledRedisClientManager.cs

@@ -303,6 +303,9 @@ private void InitClient(RedisClient client)
         /// <returns></returns>
         public virtual IRedisClient GetReadOnlyClient()
         {
+            if (ReadOnlyHosts.Count == 0)
+                return this.GetClient();
+
             lock (readClients)
             {
                 AssertValidReadOnlyPool();