error[E0308]: `if` and `else` have incompatible types
  --> $DIR/issue-83943.rs:7:9
   |
LL | /     if true {
LL | |         "A".to_string()
   | |         --------------- expected because of this
LL | |     } else {
LL | |         "B"
   | |         ^^^ expected `String`, found `&str`
LL | |     };
   | |_____- `if` and `else` have incompatible types
   |
help: try using a conversion method
   |
LL |         "B".to_string()
   |            ++++++++++++

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0308`.