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-rw-r--r--libao2/audio_out_internal.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/libao2/audio_out_internal.h b/libao2/audio_out_internal.h
index 4ddd564914..829f2736a5 100644
--- a/libao2/audio_out_internal.h
+++ b/libao2/audio_out_internal.h
@@ -1,3 +1,5 @@
+#ifndef AUDIO_OUT_INTERNAL_H
+#define AUDIO_OUT_INTERNAL_H
// prototypes:
//static ao_info_t info;
@@ -25,3 +27,4 @@ static void audio_resume(void);
audio_resume\
};
+#endif /* AUDIO_OUT_INTERNAL_H */