Update OpenAL-soft to 1.21.1

libs/openal-soft/utils/makemhr/loaddef.h

@@ -0,0 +1,13 @@
+#ifndef LOADDEF_H
+#define LOADDEF_H
+
+#include <istream>
+
+#include "makemhr.h"
+
+
+bool LoadDefInput(std::istream &istream, const char *startbytes, std::streamsize startbytecount,
+    const char *filename, const uint fftSize, const uint truncSize, const ChannelModeT chanMode,
+    HrirDataT *hData);
+
+#endif /* LOADDEF_H */