patch 9.0.0694: no native sound support on Mac OS
Problem: No native sound support on Mac OS.
Solution: Add sound support for Mac OS. (Yee Cheng Chin, closes #11274)
diff --git a/src/proto.h b/src/proto.h
index 9638eaa..7ddf103 100644
--- a/src/proto.h
+++ b/src/proto.h
@@ -327,6 +327,9 @@
# ifdef MACOS_CONVERT
# include "os_mac_conv.pro"
# endif
+# ifdef MACOS_X
+# include "os_macosx.pro"
+# endif
# if defined(MACOS_X_DARWIN) && defined(FEAT_CLIPBOARD) && !defined(FEAT_GUI)
// functions in os_macosx.m
void clip_mch_lose_selection(Clipboard_T *cbd);