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### What it does
Checks for transmutes from a pointer to a pointer, or
from a reference to a reference.
### Why is this bad?
Transmutes are dangerous, and these can instead be
written as casts.
### Example
```
let ptr = &1u32 as *const u32;
unsafe {
// pointer-to-pointer transmute
let _: *const f32 = std::mem::transmute(ptr);
// ref-ref transmute
let _: &f32 = std::mem::transmute(&1u32);
}
// These can be respectively written:
let _ = ptr as *const f32;
let _ = unsafe{ &*(&1u32 as *const u32 as *const f32) };
```
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