Bug fixing

codec2talkie/src/main/java/com/radio/codec2talkie/tools/ChecksumTools.java

@@ -43,7 +43,7 @@ public class ChecksumTools {
         int crc = 0xffff;
 
         for (int j = 0; j < data.length; j++) {
-            crc = (crc >> 8) ^ _ccitTable[(crc ^ (int)data[j]) & 0xff];
+            crc = (crc >> 8) ^ _ccitTable[(crc ^ ((int)data[j] & 0xff)) & 0xff];
             crc &= 0xffff;
         }