Bugfix

* libproto/mailer/prog.c (url_to_argv): Free ws only if
it was initialized.

@@ -349,6 +349,7 @@ url_to_argv (mu_url_t url, mu_message_t msg,
       wsflags |= MU_WRDSF_REUSE;
     }
   argv[i+1] = NULL;
+  if (wsflags & MU_WRDSF_REUSE)
     mu_wordsplit_free (&ws);
   
   *pargc = argc;