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Click on a commit to change the comparison rangeFixes for specific error message.
The added test case was emitting a wrong/confusing error message, because a for loop only gets
type-checked in its desugared form, as a while loop.
The error message was `A while loop's loop body cannot implicitly return a value.
Try assigning it to a mutable variable declared outside of the loop instead.`
Corrected to: `A for loop's loop body cannot implicitly return a value.
Try assigning it to a mutable variable declared outside of the loop instead.`