Clang 6 updates

Just some minor fixes.

Change-Id: I000c456e51c62220d7a5fed8100cfc6c13ef9551
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/image_manager.cpp b/image_manager.cpp
index 7c19866..c346fd4 100644
--- a/image_manager.cpp
+++ b/image_manager.cpp
@@ -277,4 +277,4 @@
 
 } // namespace manager
 } // namespace software
-} // namepsace phosphor
+} // namespace phosphor