port fc1f74fd09d76a9c0bc50b148a7da15468a8653b from Pd-l2ork: *fixed bug in...

port fc1f74fd09d76a9c0bc50b148a7da15468a8653b from Pd-l2ork:  *fixed bug in midifile where its helpfile was inappropriately named, thus failing to open appropriate help file.

externals/mrpeach/midifile/midifile.c

@@ -130,7 +130,7 @@ void midifile_setup(void)
     class_addmethod(midifile_class, (t_method)midifile_single_track, gensym("track"), A_DEFFLOAT, 0);
     class_addmethod(midifile_class, (t_method)midifile_rewind, gensym("rewind"), 0);
     class_addmethod(midifile_class, (t_method)midifile_verbosity, gensym("verbose"), A_DEFFLOAT, 0);
-    class_sethelpsymbol(midifile_class, gensym("midifile-help"));
+    class_sethelpsymbol(midifile_class, gensym("midifile"));
 }
 
 static void *midifile_new(t_symbol *s, int argc, t_atom *argv)