sasl: Fix 'function_clause' in systools_make:format_error

({duplicate_modules,_})

The format of the Dups argument is:
  [
    {{Mod,App1,_}, {Mod,App2,_}},
    ...
  ]

But the function expected:
  [
    {{Mod,_,App1,_,_}, {Mod,_,App2,_,_}},
    ...
  ]

A workaround was to pass the 'silent' option to systools:make_script/2.
format_error/1 was not called in this case.