clean up `get_vtable`'s doc comment
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@ -116,9 +116,11 @@ pub fn trans_object_shim<'a, 'tcx>(ccx: &'a CrateContext<'a, 'tcx>,
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llfn
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}
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/// Creates a returns a dynamic vtable for the given type and vtable origin.
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/// Creates a dynamic vtable for the given type and vtable origin.
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/// This is used only for objects.
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///
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/// The vtables are cached instead of created on every call.
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///
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/// The `trait_ref` encodes the erased self type. Hence if we are
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/// making an object `Foo<Trait>` from a value of type `Foo<T>`, then
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/// `trait_ref` would map `T:Trait`.
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