yes.c: do not use exit after error

I think it would be better to exit through the error() and not
to call the exit() after the error().  This way we can get rid of
one function call (and curly brackets).

* src/yes.c (main): Exit through the error(), remove exit() call
after error().

src/yes.c

@@ -84,9 +84,6 @@ main (int argc, char **argv)
       for (i = optind; i < argc; i++)
         if (fputs (argv[i], stdout) == EOF
             || putchar (i == argc - 1 ? '\n' : ' ') == EOF)
-          {
-            error (0, errno, _("standard output"));
-            exit (EXIT_FAILURE);
-          }
+          error (EXIT_FAILURE, errno, _("standard output"));
     }
 }