Rustdoc inlined trait shows extra type parameters

[bluss]

Compare core vs std version of the same trait:

• http://static.rust-lang.org/doc/master/core/ptr/trait.RawPtr.html
• http://static.rust-lang.org/doc/master/std/ptr/trait.RawPtr.html

The original shows fn null() -> Self; while the inlined documentation says fn null<T>() -> Self; in both summary and method detail.

[alexcrichton]

That is... surprising!

[alexcrichton]

As @luqmana points out in #15132

---

Compare the docs for RandomAccessIterator in core and in std.

    fn indexable(&self) -> uint;
    fn idx(&mut self, index: uint) -> Option<A>;

vs

    fn indexable<A>(&self) -> uint;
    fn idx<A>(&mut self, index: uint) -> Option<A>;

Those <A> don't actually exist in the code and would actually be wrong if it were there since they'd be shadowing the A from the trait.