clang-format-6.0 bump fixes

The bump to use clang-format-6.0 now reports these issues.

Change-Id: I29a50add080d83fa4c0a3f3bf961478ab860464e
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/flash-ipmi.cpp b/flash-ipmi.cpp
index a9603dd..19e8a3d 100644
--- a/flash-ipmi.cpp
+++ b/flash-ipmi.cpp
@@ -50,7 +50,7 @@
         (*fd) = nullptr;
     }
 }
-}
+} // namespace
 
 void FlashUpdate::closeEverything()
 {