Minor performance improvement. Use String.lastIndexOf(int) instead of String.lastIndexOf(String).

git-svn-id: https://svn.apache.org/repos/asf/xalan/java/trunk@1225577 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/org/apache/xalan/xsltc/compiler/util/Util.java b/src/org/apache/xalan/xsltc/compiler/util/Util.java
index ad907db..13bf03c 100644
--- a/src/org/apache/xalan/xsltc/compiler/util/Util.java
+++ b/src/org/apache/xalan/xsltc/compiler/util/Util.java
@@ -160,12 +160,12 @@
     }
 
     public static String getLocalName(String qname) {
-	final int index = qname.lastIndexOf(":");
+	final int index = qname.lastIndexOf(':');
 	return (index > 0) ? qname.substring(index + 1) : qname;
     }
 
     public static String getPrefix(String qname) {
-	final int index = qname.lastIndexOf(":");
+	final int index = qname.lastIndexOf(':');
 	return (index > 0) ? qname.substring(0, index) : 
 	    Constants.EMPTYSTRING;
     }