#117461: set row count to 0 and add further check

Patch By: Tsutomu Uchino
Review By: jsc

svtools/source/table/tablecontrol_impl.cxx

@@ -606,9 +606,17 @@ namespace svt { namespace table
             if ( m_nRowCount > 0 )
                 goTo( m_nCurColumn, m_nRowCount - 1 );
             else
+            {
                 m_nCurRow = ROW_INVALID;
+                m_nTopRow = 0;
+            }
+        }
+        else if ( m_nRowCount == 0 )
+        {
+            m_nTopRow = 0;
         }
 
+
         // relayout, since the scrollbar need might have changed
         impl_ni_relayout();