servo: Merge #3414 - Fix line splitting in `white-space: pre` flows. r=gw (from mbrubeck:pre-line-break)

Source-Repo: https://github.com/servo/servo
Source-Revision: b11a110e85ca5670a1d492b6deb616fe8a90cf5b

servo/components/layout/inline.rs

@@ -499,7 +499,7 @@ impl LineBreaker {
                 debug!("LineBreaker: Deferring the fragment to the inline_end of the new-line \
                        character to the line.");
                 let mut inline_end = split_fragment(inline_end);
-                inline_end.new_line_pos = in_fragment.new_line_pos.clone();
+                inline_end.new_line_pos.remove(0);
                 self.work_list.push_front(inline_end);
             }
             false