Changed the code that checks for the wearable delay to look for a null before comparison to avoid crashes

Author: nfranzmeier

src/android/Peripheral.java

@@ -621,7 +621,7 @@ private void processCommands() {
             int delay = 0;
 
             // 4/18/17 - NVF Added for delay for wearable writes
-            if (command.getData()[0]==0x6f) {
+            if (command.getData()!=null && command.getData()[0]==0x6f) {
                 delay = (command.getType() == BluetoothGattCharacteristic.WRITE_TYPE_DEFAULT)?2000:0;
 
             }