sw_redlinehide: trivial conversions in softpagebreak.cxx

Still a bit TODO here wrt. finding the frame from every node...

Change-Id: Icff33d2fae3afee77c4329db0938b444f0e47537

sw/source/core/layout/softpagebreak.cxx

@@ -79,7 +79,11 @@ void SwTextNode::fillSoftPageBreakList( SwSoftPageBreakList& rBreak ) const
                         if( pFirst2 == pFrame )
                         {   // Here we are: a first content inside a cell
                             // inside the splitted row => soft page break
-                            rBreak.insert( pFrame->GetOfst() );
+                            auto const pos(pFrame->MapViewToModel(pFrame->GetOfst()));
+                            if (pos.first == this)
+                            {
+                                rBreak.insert(pos.second);
+                            }
                             break;
                         }
                         pCell = pCell->GetNext();
@@ -88,7 +92,14 @@ void SwTextNode::fillSoftPageBreakList( SwSoftPageBreakList& rBreak ) const
             }
             else // No soft page break if there's a "hard" page break attribute
             if( pFirst2 == pFrame && !pFrame->IsPageBreak( true ) )
-                rBreak.insert( pFrame->GetOfst() );
+            {
+                auto const pos(pFrame->MapViewToModel(pFrame->GetOfst()));
+                if (pos.first == this)
+                {   // in the !Show case, we have to iterate over the merged
+                    // SwTextFrame for every node
+                    rBreak.insert(pos.second);
+                }
+            }
         }
     }
 }