sw: fix max->min in SwTextNode::GetScalingOfSelectedText()

(regression from b1ac01de)

Change-Id: Ic2e835f19aaa4e9b26741c409515fc8d26cab1d3
Reviewed-on: https://gerrit.libreoffice.org/54707Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Michael Stahl <Michael.Stahl@cib.de>

sw/source/core/text/itratr.cxx

@@ -846,7 +846,7 @@ sal_uInt16 SwTextNode::GetScalingOfSelectedText( sal_Int32 nStt, sal_Int32 nEnd
         aIter.SeekAndChgAttrIter( nIdx, pOut );
 
         // scan for end of portion
-        const sal_Int32 nNextChg = std::max(aIter.GetNextAttr(), aScriptInfo.NextScriptChg( nIdx ));
+        const sal_Int32 nNextChg = std::min(aIter.GetNextAttr(), aScriptInfo.NextScriptChg(nIdx));
 
         sal_Int32 nStop = nIdx;
         sal_Unicode cChar = CH_BLANK;