Polished the support for looking up column values by column label (SPR-7506)

git-svn-id: https://src.springframework.org/svn/spring-framework/trunk@3663 50f2f4bb-b051-0410-bef5-90022cba6387

org.springframework.jdbc/src/main/java/org/springframework/jdbc/support/rowset/ResultSetWrappingSqlRowSet.java

@@ -131,13 +131,13 @@ public class ResultSetWrappingSqlRowSet implements SqlRowSet {
 	 */
 	public int findColumn(String columnLabel) throws InvalidResultSetAccessException {
 		Integer columnIndex = columnLabelMap.get(columnLabel);
-		try {
-			if (columnIndex == null) {
+		if (columnIndex == null) {
+			try {
 				columnIndex = this.resultSet.findColumn(columnLabel);
 			}
-		}
-		catch (SQLException se) {
-			throw new InvalidResultSetAccessException(se);
+			catch (SQLException se) {
+				throw new InvalidResultSetAccessException(se);
+			}
 		}
 		return columnIndex.intValue();
 	}