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/pref.h b/pref.h
index e3f0a545a..415743562 100644
--- a/pref.h
+++ b/pref.h
@@ -66,4 +66,4 @@ extern void save_preferences(void);
 }
 #endif
 
-#endif /* PREF_H */
+#endif // PREF_H