tests: fix build with fresh glibc
tests: fix build with fresh glibc

* tests/netlink_unix_diag.c: Include <stdint.h>.

geofft/strace,Infinitive-OS/platform_external_strace,vrastogi/strace,Saruta/strace,Distrotech/strace,Yu-AndroidM/android_external_strace,Distrotech/strace,cuviper/strace,Infinitive-OS/platform_external_strace,kapdop/android_external_strace,YUPlayGodDev/platform_external_strace,Distrotech/strace,geekboxzone/mmallow_external_strace,geekboxzone/mmallow_external_strace,AOSP-YU/platform_external_strace,Yu-AndroidM/android_external_strace,AOSP-YU/platform_external_strace,cuviper/strace,Yu-AndroidM/android_external_strace,cuviper/strace,YUPlayGodDev/platform_external_strace,bigzz/strace_android,vrastogi/strace,Distrotech/strace,vrastogi/strace,Yu-AndroidM/android_external_strace,Saruta/strace,bigzz/strace_android,Saruta/strace,vrastogi/strace,bnoordhuis/strace,Saruta/strace,AOSP-YU/platform_external_strace,geofft/strace,YUPlayGodDev/platform_external_strace,TeamExodus/external_strace,geekboxzone/mmallow_external_strace,Yu-AndroidM/android_external_strace,kapdop/android_external_strace,bigzz/strace_android,MonkeyZZZZ/platform_external_strace,AOSP-YU/platform_external_strace,Saruta/strace,Infinitive-OS/platform_external_strace,MonkeyZZZZ/platform_external_strace,YUPlayGodDev/platform_external_strace,MonkeyZZZZ/platform_external_strace,geekboxzone/mmallow_external_strace,kapdop/android_external_strace,bnoordhuis/strace,geekboxzone/mmallow_external_strace,cuviper/strace,YUPlayGodDev/platform_external_strace,TeamExodus/external_strace,TeamExodus/external_strace,geofft/strace,geofft/strace,bigzz/strace_android,bigzz/strace_android,cuviper/strace,TeamExodus/external_strace,geofft/strace,MonkeyZZZZ/platform_external_strace,Infinitive-OS/platform_external_strace,Infinitive-OS/platform_external_strace,bnoordhuis/strace,MonkeyZZZZ/platform_external_strace,TeamExodus/external_strace,vrastogi/strace,bnoordhuis/strace,AOSP-YU/platform_external_strace,kapdop/android_external_strace,kapdop/android_external_strace,Distrotech/strace