Error message when mergeOldStyle fails.
Error message when mergeOldStyle fails.

The mergeOldStyle function seems to be aimed to remove all old-style
parameters from the argument list of a function. However, its result
sometimes includes old-style parameters, causing the previous
irrefutable pattern to fail. Now, instead of a pattern match failure,
you get an error message in this case.

darcs-hash:865d81c13718d0eef9906acf4e3c0483697362a5

micknelso/language-c,micknelso/language-c,micknelso/language-c