Failing test case for Rdoc::Parser::C for C methods with a prototype

[phiggins]

(My C knowledge is rusty, so prototype might not be the right term. My apologies).

When looking into why Zlib and WIN32OLE methods showed up on the missing documentation list when they had valid docs, I found that rdoc couldn't find documentation for C methods that had a prototype.

For example, with a recent checkout of ruby's trunk, running:

rdoc --encoding=UTF-8 -C ext/zlib/zlib.c

Outputs:

<snip>
Methods:     95 ( 83 undocumented)

Total:      150 (126 undocumented)
 16.00% documented

If I then open ext/zlib/zlib.c and delete lines 59-228 and rerun the above command, I get this output:

<snip>
Methods:     95 ( 1 undocumented)

Total:      150 (44 undocumented)
 70.67% documented