Resolves: tdf#97879 loop in style hierarchy on odt loop

Change-Id: I0098c434b89b6a57e8b888a4d4f643e4d0865d29
(cherry picked from commit e954697a9d39e40473fb9f59a791ccb7129e763c)
Reviewed-on: https://gerrit.libreoffice.org/25498
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>

1 files changed, 7 insertions, 1 deletions

diff --git a/xmloff/source/text/txtimp.cxx b/xmloff/source/text/txtimp.cxx
index 76c71273f768..5b740f1b6717 100644
--- a/xmloff/source/text/txtimp.cxx
+++ b/xmloff/source/text/txtimp.cxx
@@ -1382,7 +1382,13 @@ static bool lcl_HasListStyle( const OUString& sStyleName,
                 else
                 {
                     // search list style at parent
-                    xStyle.set( xPropState, UNO_QUERY );
+                    Reference<XStyle> xParentStyle(xPropState, UNO_QUERY);
+                    if (xStyle == xParentStyle)
+                    {
+                        // error case
+                        return true;
+                    }
+                    xStyle = xParentStyle;
                 }
             }
         }