Address the two open comments from @jlee-r7

Author: HD Moore

lib/msf/core/encoded_payload.rb

@@ -23,7 +23,7 @@ def self.create(pinst, reqs = {})
     p = EncodedPayload.new(pinst.framework, pinst, reqs)
 
     p.generate(reqs['Raw'])
-    
+
     return p
   end
 
@@ -59,7 +59,7 @@ def generate(raw = nil)
     if (priority == 0)
       Thread.current.priority = 1
     end
-    
+
     begin
       # First, validate
       pinst.validate()
@@ -75,8 +75,6 @@ def generate(raw = nil)
 
       # Finally, set the complete payload definition
       self.encoded = (self.nop_sled || '') + self.encoded
-    rescue NoEncodersSucceededError
-      self.encoded = nil
     ensure
       # Restore the thread priority
       Thread.current.priority = priority
@@ -241,7 +239,7 @@ def encode
       # If the encoded payload is nil, raise an exception saying that we
       # suck at life.
       if (self.encoded == nil)
-        self.encoder = nil        
+        self.encoder = nil
         raise NoEncodersSucceededError,
           "#{pinst.refname}: All encoders failed to encode.",
           caller

lib/msf/core/payload/stager.rb

@@ -141,7 +141,9 @@ def handle_connection(conn, opts={})
         warning_msg << " (#{conn.peerhost})"  if conn.respond_to? :peerhost
         warning_msg << ": #{$!}"
         print_warning warning_msg
-        conn.close if conn.respond_to? :close
+        if conn.respond_to? :close && !conn.closed?
+          conn.close
+        end
         return
       end
 
@@ -256,7 +258,7 @@ def encode_stage(stg)
         'EncoderOptions'     => { 'SaveRegisters' => saved_registers },
         'ForceSaveRegisters' => true,
         'ForceEncode'        => true)
-      
+
       if encp.encoder
         print_status("Encoded stage with #{encp.encoder.refname}")
         estg = encp.encoded