linux-user: Correct print_sockaddr() format

linux-user: Correct print_sockaddr() format

When the %addr argument can not be accessed, a double comma
is logged (the final qemu_log call prepend a comma).  Move
the comma from the final qemu_log to the preceeding switch
cases that had omitted it.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240807124306.52903-2-philmd@linaro.org>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
[rth: Move comma into the various switch cases.]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>