Update tlslite to 0.4.6.

third_party/tlslite/tlslite/utils/openssl_rc4.py

Index: third_party/tlslite/tlslite/utils/openssl_rc4.py
diff --git a/third_party/tlslite/tlslite/utils/openssl_rc4.py b/third_party/tlslite/tlslite/utils/openssl_rc4.py
index 2dc5adbe22febfd745513d3301ee391a25202cc8..2fbfa07e2bc3673b74ea4a158cbdab187b9af4e0 100644
--- a/third_party/tlslite/tlslite/utils/openssl_rc4.py
+++ b/third_party/tlslite/tlslite/utils/openssl_rc4.py
@@ -1,7 +1,10 @@
+# Author: Trevor Perrin
+# See the LICENSE file for legal information regarding use of this file.
+
 """OpenSSL/M2Crypto RC4 implementation."""
 
-from cryptomath import *
-from rc4 import RC4
+from .cryptomath import *
+from .rc4 import RC4
 
 if m2cryptoLoaded:
 
@@ -19,7 +22,7 @@ if m2cryptoLoaded:
             m2.rc4_free(self.rc4)
 
         def encrypt(self, plaintext):
-            return m2.rc4_update(self.rc4, plaintext)
+            return bytearray(m2.rc4_update(self.rc4, plaintext))
 
         def decrypt(self, ciphertext):
-            return self.encrypt(ciphertext)
+            return bytearray(self.encrypt(ciphertext))