tdf#112860 sw: avoid shortcut for tables in SwFrame::GetNextSctLeaf()

As the comment says the shortcut only works if no columns or pages are
between the section frames, while for tables there are definitely table,
row and column frames. This resulted later in
SwFrame::IsFootnoteAllowed() a nullptr dereference, as the frame was
still marked as in-table, but wasn't in a table anymore.

Reviewed-on: https://gerrit.libreoffice.org/43091
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>
(cherry picked from commit c985ad5f7b479706935459630c5a59ccae6fa8b7)

Conflicts:
sw/qa/extras/uiwriter/uiwriter.cxx

Change-Id: I4191c77d20c6ccc096156fae15ca7c22cc5b68b6

1 files changed, 10 insertions, 0 deletions

diff --git a/sw/qa/extras/uiwriter/uiwriter.cxx b/sw/qa/extras/uiwriter/uiwriter.cxx
index 308cf229ff42..3d4b91ac82ad 100644
--- a/sw/qa/extras/uiwriter/uiwriter.cxx
+++ b/sw/qa/extras/uiwriter/uiwriter.cxx
@@ -210,6 +210,7 @@ public:
     void testSectionInTableInTable2();
     void testTdf112160();
     void testTdf112741();
+    void testTdf112860();
     void testLinesInSectionInTable();
     void testLinesMoveBackwardsInSectionInTable();
 
@@ -327,6 +328,7 @@ public:
     CPPUNIT_TEST(testTdf112160);
     CPPUNIT_TEST(testLinesMoveBackwardsInSectionInTable);
     CPPUNIT_TEST(testTdf112741);
+    CPPUNIT_TEST(testTdf112860);
     CPPUNIT_TEST_SUITE_END();
 
 private:
@@ -3869,6 +3871,14 @@ void SwUiWriterTest::testTdf112741()
     assertXPath(pXmlDoc, "//page[4]/body/tab/row/cell/tab/row/cell/section", 1);
 }
 
+void SwUiWriterTest::testTdf112860()
+{
+    // The document has a split section inside a nested table, and also a table
+    // in the footer.
+    // This crashed the layout.
+    createDoc("tdf112860.fodt");
+}
+
 void SwUiWriterTest::testTableInSectionInTable()
 {
     // The document has a table, containing a section, containing a nested