Rollup merge of #147785 - relaxcn:emitter_sugg_line, r=petrochenkov

fix incorrect line number when building trimmed multi-line suggestions

While fixing the issue rust-lang/rust-clippy#15883 from `rust-clippy`, I tracked it down to a problem in `rustc` where line numbers were incorrect when building trimmed multi-line suggestions.

Author: matthiaskrgr