Fix for SQLExec when used with Informix.

PR: 27162
Obtained from: Bohuslav Roztocil


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@276140 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/taskdefs/SQLExec.java

@@ -531,8 +531,10 @@ public class SQLExec extends JDBCTask {
                     }
                 }
                 ret = statement.getMoreResults();
-                updateCount = statement.getUpdateCount();
-                resultSet = statement.getResultSet();
+                if (ret) {
+                    updateCount = statement.getUpdateCount();
+                    resultSet = statement.getResultSet();
+                }
             } while (ret);
 
             log(updateCountTotal + " rows affected",