Pedantry and other fixes

[noeltimothy]

Fixed warnings

/Users/gary/SoftwareProjects/wireshark/ja4/wireshark/build-scripts/wireshark-4.2.0/plugins/epan/ja4/packet-ja4.c:672:51: warning: format specifies type ‘long long’ but the argument has type ‘long’ [-Wformat]
            wmem_strbuf_append_printf(display, “%” PRId64, diff); //(int) latency.nsecs / 100000000);
                              ~~~~~~~~~ ^~~~
/Users/gary/SoftwareProjects/wireshark/ja4/wireshark/build-scripts/wireshark-4.2.0/plugins/epan/ja4/packet-ja4.c:679:53: warning: format specifies type ‘long long’ but the argument has type ‘long’ [-Wformat]
            wmem_strbuf_append_printf(display, “-R%” PRId64, diff); //(int) latency.nsecs / 100000000);