Add header guard.

diff --git a/src/lib/scope_guard.h b/src/lib/scope_guard.h
index c261040115ca8e7cfe3de83d7dcb9cd20b03bcd6..ac60f9feaa15de9b849b50e705824b8cd66d04d4 100644 (file)
--- a/src/lib/scope_guard.h
+++ b/src/lib/scope_guard.h
@@ -19,6 +19,10 @@
 */
 
 
+#ifndef DCPOMATIC_SCOPE_GUARD_H
+#define DCPOMATIC_SCOPE_GUARD_H
+
+
 #include <functional>
 
 
@@ -49,3 +53,5 @@ private:
 };
 
 
+#endif
+