FPSpreadsheet: Fix incorrect bar and area series baseline of primary/secondary y axis charts in xlsx

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@9460 8e941d3f-bd1b-0410-a28a-d453659cc2b4

components/fpspreadsheet/source/common/xlsxooxmlchart.pas

@@ -4026,6 +4026,8 @@ begin
     WriteChartLabels(AStream, AIndent + 2, Axis.LabelFont);
 
   // Axis position
+  if delete = 0 then
+  begin
     case Axis.Position of
       capStart:
         crosses := '  <c:crosses val="min"/>';
@@ -4038,6 +4040,7 @@ begin
       // not used here: "autoZero"
     end;
     if crosses <> '' then crosses := indent + crosses + LE;
+  end;
 
   AppendToStream(AStream, Format(
     indent + '  <c:numFmt formatCode="General" sourceLinked="1"/>' + LE +