Fixed build

src/libs/audio/impl/ffmpeg/Exception.hpp

@@ -18,6 +18,8 @@
  * along with LMS.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#pragma once
+
 #include <string_view>
 
 #include "audio/Exception.hpp"

src/libs/audio/impl/ffmpeg/FFmpegTypes.hpp

@@ -18,6 +18,8 @@
  * along with LMS.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#pragma once
+
 #include <memory>
 
 extern "C"