fdo#78907 : File crashed while saving.

   - There is pagebreak in file and footer has nested table.
   - While exporting LO write section break instead of PAGE_BREAK.
   - Due to this it was writing two sections in file and same footer
     for both sections.
   - This was causing wrong table depth values due to this it was crashing
     while writing table.
   - So in MSWordExportBase::OutputSectionBreaks if next node has
     RES_BREAK(page break) then bNewPageDesc value should be false.

Change-Id: I2ccc4e48a26253716253a7280a244f06e172770a
Reviewed-on: https://gerrit.libreoffice.org/9568Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>

sw/qa/extras/ooxmlexport/ooxmlexport.cxx

@@ -3460,6 +3460,19 @@ DECLARE_OOXMLEXPORT_TEST(testFDO79062, "fdo79062.docx")
     assertXPath(pXmlEndNotes, "/w:endnotes", "Ignorable", "w14 wp14");
 }
 
+DECLARE_OOXMLEXPORT_TEST(testfdo78907,"fdo78907.docx")
+{
+    xmlDocPtr pXmlDoc = parseExport("word/document.xml");
+    if (!pXmlDoc)
+        return;
+    assertXPath ( pXmlDoc, "/w:document/w:body/w:p[1]/w:r[2]/w:br", "type", "page" );
+
+    xmlDocPtr pXmlDoc1 = parseExport("word/footer1.xml");
+    if (!pXmlDoc1)
+        return;
+    assertXPath ( pXmlDoc1, "/w:ftr[1]/w:tbl[1]/w:tr[1]/w:tc[1]/w:tbl[1]/w:tr[1]/w:tc[1]/w:tbl", 0 );
+}
+
 #endif
 
 CPPUNIT_PLUGIN_IMPLEMENT();

sw/source/filter/ww8/ww8atr.cxx

@@ -483,7 +483,7 @@ void MSWordExportBase::OutputSectionBreaks( const SfxItemSet *pSet, const SwNode
                     }
                 }
             }
-
+            bNewPageDesc = false; // if next node has RES_BREAK(page break) then bNewPageDesc value should be false.
             bBreakSet = true;
 
             if ( !bRemoveHardBreakInsideTable )