Escape ampersand.

doc/src/sgml/indexcost.sgml

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-$Header: /cvsroot/pgsql/doc/src/sgml/Attic/indexcost.sgml,v 2.13 2003/01/12 22:35:29 tgl Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/Attic/indexcost.sgml,v 2.14 2003/01/14 10:19:02 petere Exp $
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  <chapter id="indexcost">
@@ -237,7 +237,7 @@ amcostestimate (Query *root,
      * Also, we charge for evaluation of the indexquals at each index tuple.
      * All the costs are assumed to be paid incrementally during the scan.
      */
-    cost_qual_eval(&index_qual_cost, indexQuals);
+    cost_qual_eval(&amp;index_qual_cost, indexQuals);
     *indexStartupCost = index_qual_cost.startup;
     *indexTotalCost = numIndexPages +
         (cpu_index_tuple_cost + index_qual_cost.per_tuple) * numIndexTuples;