Minor style fix to please internal style tool.

TBR=sprang@webrtc.org
BUG=None

Review-Url: https://codereview.webrtc.org/2654033006
Cr-Commit-Position: refs/heads/master@{#16301}
diff --git a/webrtc/modules/video_coding/video_codec_initializer.cc b/webrtc/modules/video_coding/video_codec_initializer.cc
index 96a0033..39ce8f2 100644
--- a/webrtc/modules/video_coding/video_codec_initializer.cc
+++ b/webrtc/modules/video_coding/video_codec_initializer.cc
@@ -103,7 +103,7 @@
       break;
     case VideoEncoderConfig::ContentType::kScreen:
       video_codec.mode = kScreensharing;
-      if (streams.size() >= 1 &&
+      if (!streams.empty() &&
           streams[0].temporal_layer_thresholds_bps.size() == 1) {
         video_codec.targetBitrate =
             streams[0].temporal_layer_thresholds_bps[0] / 1000;