Lands rapid7#4617, fixes msfvenom output with no encoder.

Author: HD Moore

lib/msf/core/payload_generator.rb

@@ -176,10 +176,10 @@ def choose_platform(mod)
     def encode_payload(shellcode)
       shellcode = shellcode.dup
       encoder_list = get_encoders
-      cli_print "Found #{encoder_list.count} compatible encoders"
       if encoder_list.empty?
         shellcode
       else
+        cli_print "Found #{encoder_list.count} compatible encoders"
         encoder_list.each do |encoder_mod|
           cli_print "Attempting to encode payload with #{iterations} iterations of #{encoder_mod.refname}"
           begin