bug 60416: Reduce Hyperlink memory consumption in SXSSF; patch from Dmitry Katsubo

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1771231 13f79535-47bb-0310-9956-ffa450edef68

src/ooxml/java/org/apache/poi/xssf/streaming/SXSSFCell.java

@@ -711,7 +711,7 @@ public class SXSSFCell implements Cell {
         XSSFHyperlink xssfobj = (XSSFHyperlink)link;
         // Assign to us
         CellReference ref = new CellReference(getRowIndex(), getColumnIndex());
-        xssfobj.getCTHyperlink().setRef( ref.formatAsString()  );
+        xssfobj.setCellReference( ref.formatAsString() );
 
         // Add to the lists
         getSheet()._sh.addHyperlink(xssfobj);