page-footer: add explanation for three missing exit codes

Added in 7.73.0, 7.77.0 and 7.84.0

Closes #10630
This commit is contained in:
Daniel Stenberg 2023-02-27 19:47:28 +01:00
parent 8d708e4cad
commit 13afb87268
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@ -300,6 +300,12 @@ be one out of several problems, see the error message for details.
.IP 96
QUIC connection error. This error may be caused by an SSL library error. QUIC
is the protocol used for HTTP/3 transfers.
.IP 97
Proxy handshake error.
.IP 98
A client-side certificate is required to complete the TLS handshake.
.IP 99
Poll or select returned fatal error.
.IP XX
More error codes will appear here in future releases. The existing ones
are meant to never change.