Put include guard to every header

* ensure include guard to every header
* comment endif guard block

Signed-off-by: Boris Barbulovski <bbarbulovski@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/deco.h b/deco.h
index 0fc6cc2e5..aa6d299dd 100644
--- a/deco.h
+++ b/deco.h
@@ -12,4 +12,4 @@ extern double buehlmann_N2_t_halflife[];
 }
 #endif
 
-#endif
+#endif // DECO_H