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

git-svn-id: https://svn.apache.org/repos/asf/xalan/java/trunk@1225579 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/org/apache/xalan/xsltc/dom/SAXImpl.java b/src/org/apache/xalan/xsltc/dom/SAXImpl.java
index e63dfba..d990638 100644
--- a/src/org/apache/xalan/xsltc/dom/SAXImpl.java
+++ b/src/org/apache/xalan/xsltc/dom/SAXImpl.java
@@ -521,7 +521,7 @@
         int code;
 
         // Is there a prefix?
-        if ((index = name.lastIndexOf(":"))> -1) {
+        if ((index = name.lastIndexOf(':'))> -1) {
             ns = name.substring(0, index);
         }