lib/fluent/plugin/in_cloudwatch_logs.rb in fluent-plugin-cloudwatch-logs-0.9.1 vs lib/fluent/plugin/in_cloudwatch_logs.rb in fluent-plugin-cloudwatch-logs-0.9.2

@@ -188,10 +188,10 @@
     def describe_log_streams(log_stream_name_prefix, log_streams = nil, next_token = nil)
       request = {
         log_group_name: @log_group_name
       }
       request[:next_token] = next_token if next_token
-      request[:log_stream_name_prefix] = log_stream_name_prefix
+      request[:log_stream_name_prefix] = log_stream_name_prefix if log_stream_name_prefix
       response = @logs.describe_log_streams(request)
       if log_streams
         log_streams.concat(response.log_streams)
       else
         log_streams = response.log_streams