Fix a bug with attaching ends in ExtendTool

This managed to avoid a segfault despite the null pointer dereference,
because the first thing Track::link_to does is check if the passed-in
reference is a track, and a null pointer isn't.

diff --git a/source/designer/extendtool.cpp b/source/designer/extendtool.cpp
index 54d3d10b8081dca2610f5f418470c6f0504f64e7..9b6ec9ab606474bd5c1facfdd9d2b623fb86d80c 100644 (file)
--- a/source/designer/extendtool.cpp
+++ b/source/designer/extendtool.cpp
@@ -84,6 +84,8 @@ void ExtendTool::connect()
                        if(gap<0)
                                continue;
 
+                       start_track = i->track();
+                       end_track = j->track();
                        ok = true;
                }