Only append .dll if no extension yet.
[wine] / include / msacm.h
1999-02-15  Douglas Ridgwayc2man doesn't like extra semicolons.
1999-02-14  Bertho StultiensChange a couple of names that would conflict after...
1998-10-11  Patrik StridvallStarted the implementation of MSACM.DLL and MSACM32...