The truncation is not possible in practice but add suitable cast to
avoid the warning.
samples/net/sockets/echo_server/src/tcp.c:297:54: warning:
‘%d’ directive output may be truncated writing between 1 and 10 bytes
into a region of size 5 [-Wformat-truncation=]
297 | snprintk(name, sizeof(name), "tcp4[%d]", slot);
| ^~~~~~~~~~
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
6fb34733b5