use a character comparison instead of a string comparison for TypeIdItem.getRegisterCount()

git-svn-id: https://smali.googlecode.com/svn/trunk@687 55b6fa8a-2a1e-11de-a435-ffa8d773f76a

dexlib/src/main/java/org/jf/dexlib/TypeIdItem.java

@@ -168,7 +168,7 @@ public class TypeIdItem extends Item<TypeIdItem> {
         /** Only the long and double primitive types are 2 words,
          * everything else is a single word
          */
-        if (type.equals("J") || type.equals("D")) {
+        if (type.charAt(0) == 'J' || type.charAt(0) == 'D') {
             return 2;
         } else {
             return 1;