Removed un-needed variables process_file()

README.md

@@ -40,7 +40,7 @@ This is a work in progress, further functionality coming shortly.
 
     m.delete('utYjgSTQ')
     m.delete_url('https://mega.co.nz/#!utYjgSTQ!OM4U3V5v_W4N5edSo0wolg1D5H0fwSrLD3oLnLuS9pc')
-    
+
     files = m.find('myfile.doc')
     if files:
         m.delete(files[1]['k'])

mega.py

@@ -321,8 +321,8 @@ class Mega(object):
             key = decrypt_key(base64_to_a32(key), self.master_key)
             if file['t'] == 0:
                 k = file['k'] = (key[0] ^ key[4], key[1] ^ key[5], key[2] ^ key[6], key[3] ^ key[7])
-                iv = file['iv'] = key[4:6] + (0, 0)
-                meta_mac = file['meta_mac'] = key[6:8]
+                file['iv'] = key[4:6] + (0, 0)
+                file['meta_mac'] = key[6:8]
             else:
                 k = file['k'] = key
             attributes = base64_url_decode(file['a'])