Imported Upstream version 2.18.0

[lilypond.git] / lily / output-def.cc

diff --git a/lily/output-def.cc b/lily/output-def.cc
index e425dbf4f93cd2dba5fc03172017a02f04ff63b4..addb0ef1ef57f5ee858b3e0a8804da09ace1fbc0 100644 (file)
--- a/lily/output-def.cc
+++ b/lily/output-def.cc
@@ -129,7 +129,7 @@ Output_def::lookup_variable (SCM sym) const
 }
 
 SCM
-Output_def::c_variable (string s) const
+Output_def::c_variable (const string &s) const
 {
   return lookup_variable (ly_symbol2scm (s.c_str ()));
 }