Rollup merge of #143583 - folkertdev:loop-match-no-terminator-on-block, r=bjorn3

`loop_match`: fix 'no terminator on block'

tracking issue: rust-lang/rust#132306
fixes rust-lang/rust#143435

The argument `block` was not properly closed on an error path.

r? `@bjorn3`

Author: matthiaskrgr