Fix cpplint whitespace/comments issues

Change-Id: Iae286862c85fb8fd8901eae1204cd6d271d69496
diff --git a/runtime/thread_linux.cc b/runtime/thread_linux.cc
index 1bd708a..ee66ccc 100644
--- a/runtime/thread_linux.cc
+++ b/runtime/thread_linux.cc
@@ -56,7 +56,7 @@
   // Tell the kernel to stop using it.
   ss.ss_sp = NULL;
   ss.ss_flags = SS_DISABLE;
-  ss.ss_size = SIGSTKSZ; // Avoid ENOMEM failure with Mac OS' buggy libc.
+  ss.ss_size = SIGSTKSZ;  // Avoid ENOMEM failure with Mac OS' buggy libc.
   SigAltStack(&ss, NULL);
 
   // Free it.