Switch to the stock EncodingError exception

Author: HD Moore

modules/encoders/x86/avoid_utf8_tolower.rb

@@ -90,20 +90,6 @@
 #
 class Metasploit3 < Msf::Encoder
 
-  #
-  # In some cases, payloads can be an invalid size that is incompatible with
-  # this encoder
-  #
-  class InvalidPayloadSizeException < ::Exception
-    def initialize(msg)
-      @msg = msg
-    end
-
-    def to_s
-      @msg
-    end
-  end
-
   # This encoder has a manual ranking because it should only be used in cases
   # where information has been explicitly supplied, like the BufferOffset.
   Rank = ManualRanking
@@ -136,7 +122,7 @@ def decoder_stub(state)
 
     # Check to make sure that the length is a valid size
     if is_badchar(state, len)
-      raise InvalidPayloadSizeException.new("The payload being encoded is of an incompatible size (#{len} bytes)")
+      raise EncodingError.new("The payload being encoded is of an incompatible size (#{len} bytes)")
     end
 
     decoder =