tdf#115221 crash in printing and comment

not wonderfully happy with this fix, because we're changing the delete
ordering here, but the origin of this bug was

    commit a754294ac7a902fe96fbbd6b8b6824a360d6b248
    use rtl::Reference in SwDocFac instead of manual acquire/releas

and

    commit	cc483d0470dbf0d01e4da818b148ff0b851c5187 (patch)
    tdf#112292 - fix memory leak and use more auto ref counting in sw

so the delete ordering was obviously messed up in those already, and we
have such a morass of callbacks here, I can't see where else to fix it.

I tried to add a couple more "getDoc() != nullptr" checks, but we still
ended up crashing with an SwViewShell that had a bad pLayoutAccess
pointer.

Change-Id: I4aa39d58ae25bed41e3fd2c32c6d53659012ec10
Reviewed-on: https://gerrit.libreoffice.org/48658
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
(cherry picked from commit de9bcd167b059e00818304626c0cadaa330738a4)
Reviewed-on: https://gerrit.libreoffice.org/48748
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>

1 files changed, 1 insertions, 3 deletions

diff --git a/sw/source/core/view/vnew.cxx b/sw/source/core/view/vnew.cxx
index 2998ffb131f8..4c74acecdd09 100644
--- a/sw/source/core/view/vnew.cxx
+++ b/sw/source/core/view/vnew.cxx
@@ -324,9 +324,7 @@ SwViewShell::~SwViewShell()
 
         if ( mxDoc.get() )
         {
-            auto x = mxDoc->getReferenceCount();
-            mxDoc.clear();
-            if( x > 1 )
+            if( mxDoc->getReferenceCount() > 1 )
                 GetLayout()->ResetNewLayout();
         }