Commits on Jan 13, 2023

1. Emit a hint for bad call return types due to generic arguments …

   When the return type of a function call depends on the type of an
   argument, e.g.
   
   ```
   fn foo<T>(x: T) -> T {
       x
   }
   ```
   
   and the expected type is set due to either an explicitly typed
   binding, or because the call to the function is in a tail position
   without semicolon, the current error implies that the argument in the
   call has the wrong type.
   
   This new hint highlights that the expected type doesn't match the
   returned type, which matches the argument type, and that that's why
   we're flagging the argument type.
   
   Fixes rust-lang#43608.

   

   sulami committed Jan 13, 2023
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