Replace C++ (in)equality checks with proper SCM syntax

[lilypond.git] / lily / context-scheme.cc

diff --git a/lily/context-scheme.cc b/lily/context-scheme.cc
index a3462354e07be6e76ed73b41bd6d04faee72d88c..d4bd77296c70a078247f75ea8f66f4af20b1ca46 100644 (file)
--- a/lily/context-scheme.cc
+++ b/lily/context-scheme.cc
@@ -103,7 +103,7 @@ LY_DEFINE (ly_context_property, "ly:context-property",
 
   Context *t = Context::unsmob (context);
   SCM result = t->get_property (sym);
-  return def != SCM_UNDEFINED && scm_is_null (result) ? def : result;
+  return !SCM_UNBNDP (def) && scm_is_null (result) ? def : result;
 }
 
 LY_DEFINE (ly_context_set_property_x, "ly:context-set-property!",