Fix error message for instrumentSwitch when instrument has not been defined

diff --git a/ly/music-functions-init.ly b/ly/music-functions-init.ly
index 626203d996d074d4f4d8e205dd20029aae74fdb2..a57a17bc80f38dc7deccd283e12c78553f6ff099 100644 (file)
--- a/ly/music-functions-init.ly
+++ b/ly/music-functions-init.ly
@@ -289,7 +289,7 @@ instrumentSwitch =
        )
 
      (if (not handle)
-        (ly:input-message "No such instrument: ~a" name))
+        (ly:input-message location "No such instrument: ~a" name))
      (context-spec-music
       (make-music 'SimultaneousMusic
                  'elements