__tiff__.cc: handled unused parameter warning when Tiff is not enabled * libtinerp/corefcn/__tiff__.cc: added appropriate hadnling for unused parameters for cases when Octave is compiled without Tiff support to suppress compiler warnings in that case.

1; %script identifier

if (flag)
  function r = computation ()
    r = 1;
  endfunction

  r = computation ();
else
  function r = computation ()
    r = 2;
  endfunction

  r = computation ();
endif