Fixing typo in XMLRpc error message:

http://codeigniter.com/bug_tracker/bug/11556/
diff --git a/system/libraries/Xmlrpc.php b/system/libraries/Xmlrpc.php
index 2e0df5c..ee04400 100644
--- a/system/libraries/Xmlrpc.php
+++ b/system/libraries/Xmlrpc.php
@@ -112,7 +112,7 @@
 		$this->xmlrpcerr['unknown_method'] = '1';
 		$this->xmlrpcstr['unknown_method'] = 'This is not a known method for this XML-RPC Server';
 		$this->xmlrpcerr['invalid_return'] = '2';
-		$this->xmlrpcstr['invalid_return'] = 'The XML data receieved was either invalid or not in the correct form for XML-RPC.  Turn on debugging to examine the XML data further.';
+		$this->xmlrpcstr['invalid_return'] = 'The XML data received was either invalid or not in the correct form for XML-RPC.  Turn on debugging to examine the XML data further.';
 		$this->xmlrpcerr['incorrect_params'] = '3';
 		$this->xmlrpcstr['incorrect_params'] = 'Incorrect parameters were passed to method';
 		$this->xmlrpcerr['introspect_unknown'] = '4';