git: Double-click on diff line jumps to same line number but different content

1. Show commit 417a6db08776ab5f49389e974a777fb78f1de3eb from Qt Creator's source repository in Creator.
2. In the diff, double-click the first added line:

   int i = 1892;
   

   Creator opens the correct file but places the cursor at the very end.

This seems to happen because the line was added as line 39. In the meantime, the file's header was removed so the added content can now be found in line 17.

Relying on unchanged line numbers is problematic because the whole point of a VCS is that the files' contents will change.