JSON: fix crashes in ${extract jsons } and ${extract json {digits} }

[exim.git] / test / paniclog / 0546

1999-03-02 09:44:33 EHLO/HELO response must not contain newlines: message truncated: 250 Two\nlines
1999-03-02 09:44:33 configured error code starts with incorrect digit (expected 2) in "450 Bad number"