[Bug] Windows11 下 icmp trace 报错

[libtry486]

Windows11，x64，版本 v1.4.3-beta.2 2025-09-14T10:45:12Z dbeef33
ipv4 icmp模式

14 184.104.189.18 AS6939 [HURRICANE-11] 法国 法兰西岛大区 巴黎 he.net
port-channel11.core2.par3.he.net 189.23 ms / 189.34 ms / 191.17 ms
15 216.66.87.238 panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x0 addr=0x18 pc=0x7ff6e46ef3b0]

goroutine 83 [running]:
github.com/nxtrace/NTrace-core/printer.RealtimePrinter(0xc0000925b8, 0xe)
github.com/nxtrace/NTrace-core/printer/realtime_printer.go:69 +0xd30
github.com/nxtrace/NTrace-core/trace.(*ICMPTracer).PrintFunc(0xc0000924e0, {0x7ff6e4917218, 0xc000704320}, 0xc000296e20)
github.com/nxtrace/NTrace-core/trace/icmp_ipv4.go:56 +0x13a
created by github.com/nxtrace/NTrace-core/trace.(*ICMPTracer).Execute in goroutine 1
github.com/nxtrace/NTrace-core/trace/icmp_ipv4.go:156 +0x50b

[tsosunchia]

正在排查

[tsosunchia]

为方便后续处理，已经此问题转至issue区
nxtrace#113