Be sure to cleanup and close bad client sockets

lib/puma/reactor.rb

@@ -36,6 +36,9 @@ module Puma
                 end
               # The client doesn't know HTTP well
               rescue HttpParserError => e
+                c.close
+                sockets.delete c
+
                 @events.parse_error @server, c.env, e
 
               rescue EOFError

lib/puma/server.rb

@@ -205,6 +205,7 @@ module Puma
         begin
           process_now = client.eagerly_finish
         rescue HttpParserError => e
+          client.close
           @events.parse_error self, client.env, e
         rescue EOFError
           client.close