Fix cpplint whitespace/comments issues

Change-Id: Iae286862c85fb8fd8901eae1204cd6d271d69496
diff --git a/runtime/base/logging.cc b/runtime/base/logging.cc
index bf19e8d..83ecca8 100644
--- a/runtime/base/logging.cc
+++ b/runtime/base/logging.cc
@@ -126,7 +126,7 @@
 
 LogMessage::~LogMessage() {
   if (data_->severity < gMinimumLogSeverity) {
-    return; // No need to format something we're not going to output.
+    return;  // No need to format something we're not going to output.
   }
 
   // Finish constructing the message.