cleanup: Span::new -> Span::with_lo

Author: petrochenkov

clippy_lints/src/unit_return_expecting_ord.rs

@@ -127,7 +127,7 @@ fn check_arg<'tcx>(cx: &LateContext<'tcx>, arg: &'tcx Expr<'tcx>) -> Option<(Spa
                 then {
                     let data = stmt.span.data();
                     // Make a span out of the semicolon for the help message
-                    Some((span, Some(Span::new(data.hi-BytePos(1), data.hi, data.ctxt))))
+                    Some((span, Some(data.with_lo(data.hi-BytePos(1)))))
                 } else {
                     Some((span, None))
                 }

clippy_lints/src/write.rs

@@ -299,7 +299,7 @@ impl EarlyLintPass for Write {
                     let nl_span = match (dest, only_nl) {
                         // Special case of `write!(buf, "\n")`: Mark everything from the end of
                         // `buf` for removal so no trailing comma [`writeln!(buf, )`] remains.
-                        (Some(dest_expr), true) => Span::new(dest_expr.span.hi(), nl_span.hi(), nl_span.ctxt()),
+                        (Some(dest_expr), true) => nl_span.with_lo(dest_expr.span.hi()),
                         _ => nl_span,
                     };
                     span_lint_and_then(

clippy_utils/src/lib.rs

@@ -877,7 +877,7 @@ fn line_span<T: LintContext>(cx: &T, span: Span) -> Span {
     let source_map_and_line = cx.sess().source_map().lookup_line(span.lo()).unwrap();
     let line_no = source_map_and_line.line;
     let line_start = source_map_and_line.sf.lines[line_no];
-    Span::new(line_start, span.hi(), span.ctxt())
+    span.with_lo(line_start)
 }
 
 /// Gets the parent node, if any.