use unsigned shifting

Author: Tahgolov

src/main/java/com/reandroid/arsc/item/StringItem.java

@@ -553,7 +553,7 @@ private static byte[] encodeUtf16ToBytes(String str) {
             lenBytes[3] = (byte) (high >> 8);
             lenBytes[2] = (byte) low;
             low = rem & 0xff;
-            high = (rem & 0xff00) >> 8;
+            high = rem >>> 8;
             lenBytes[1] = (byte) (high | 0x80);
             lenBytes[0] = (byte) low;
         } else {

src/main/java/com/reandroid/arsc/value/array/ArrayBag.java

@@ -156,7 +156,7 @@ public static boolean isArray(Entry entry) {
          while (iterator.hasNext()) {
              ResValueMap resValueMap = iterator.next();
              int name = resValueMap.getNameId();
-             int high = (name >> 16) & 0xffff;
+             int high = name >>> 16;
              if(high != 0x0100){
                  return false;
              }