New line at the end of file is necessary?

Hi,

I have encountered a trouble when using c2hs. If the file is end of a `{#fun#}` binding and there's no new line at the end of file, an exception

~~~
c2hs: No match in record selector posRow
~~~

would be thrown. I'm wondering whether it's a bug, or just a feature?

A minimal case can be used to reproduce this bug:

~~~haskell
#include

{#fun variadic printf[const char *] as prints {`String', `String'} -> `()'#}
~~~

When add a new line at the end of file, c2hs would works well.