Refactor API calls in lvar.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/codec/trunk@1586298 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

src/main/java/org/apache/commons/codec/language/Metaphone.java

@@ -91,8 +91,8 @@ public Metaphone() {
      */
     public String metaphone(final String txt) {
         boolean hard = false;
-        final int txtLength = txt.length();
-        if (txt == null || txtLength == 0) {
+        int txtLength;
+        if (txt == null || (txtLength = txt.length()) == 0) {
             return "";
         }
         // single character is itself