Move more stuff from hb-private.hh to hb-dsalgs.hh
diff --git a/src/hb-debug.hh b/src/hb-debug.hh
index c244347..ae0b677 100644
--- a/src/hb-debug.hh
+++ b/src/hb-debug.hh
@@ -28,6 +28,7 @@
 #define HB_DEBUG_HH
 
 #include "hb-private.hh"
+#include "hb-dsalgs.hh"
 
 
 #ifndef HB_DEBUG