Fix bug in addReader(), using contains() where containsKey() was intended

git-svn-id: https://svn.apache.org/repos/asf/xml/commons/trunk@226058 13f79535-47bb-0310-9956-ffa450edef68

java/src/org/apache/xml/resolver/Catalog.java

@@ -461,7 +461,7 @@ public class Catalog {
    * @param reader The CatalogReader to use.
    */
   public void addReader(String mimeType, CatalogReader reader) {
-    if (readerMap.contains(mimeType)) {
+    if (readerMap.containsKey(mimeType)) {
       Integer pos = (Integer) readerMap.get(mimeType);
       readerArr.set(pos.intValue(), reader);
     } else {
@@ -578,6 +578,7 @@ public class Catalog {
    */
   public void loadSystemCatalogs()
     throws MalformedURLException, IOException {
+
     Vector catalogs = catalogManager.getCatalogFiles();
     if (catalogs != null) {
       for (int count = 0; count < catalogs.size(); count++) {