tdf#163691 replace memcpy with std::copy in xml_byteseq

Change-Id: I6d178bcb6127ba444bf4566906efe46204f5ab6d
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/183511
Reviewed-by: Hossein   <hossein@libreoffice.org>
Tested-by: Jenkins

xmlscript/source/xml_helper/xml_byteseq.cxx

@@ -120,9 +120,9 @@ void BSeqOutputStream::writeBytes( Sequence< sal_Int8 > const & rData )
     sal_Int32 nPos = _seq->size();
     _seq->resize( nPos + rData.getLength() );
     if (rData.getLength() != 0) {
-        memcpy( _seq->data() + nPos,
-                rData.getConstArray(),
-                rData.getLength() );
+        std::copy(rData.getConstArray(),
+                  rData.getConstArray() + rData.getLength(),
+                  _seq->begin() + nPos);
     }
 }
 void BSeqOutputStream::flush()