When building tini with musl libc, the following error occurs dur to
missing declaration of 'basename':
```
/home/buildroot/instance-0/output-1/build/tini-0.19.0/src/tini.c: In function 'print_usage':
/home/buildroot/instance-0/output-1/build/tini-0.19.0/src/tini.c:227:36: error: implicit declaration of function 'basename' [-Wimplicit-function-declaration]
227 | fprintf(file, "%s (%s)\n", basename(name), TINI_VERSION_STRING);
| ^~~~~~~~
make: *** [package/pkg-generic.mk:273: /home/buildroot/instance-0/output-1/build/tini-0.19.0/.stamp_built] Error 1
make: Leaving directory '/home/buildroot/instance-0/buildroot'
```
This error can be reproduced with:
```
cat >.config <<EOF
BR2_aarch64=y
BR2_TOOLCHAIN_EXTERNAL=y
BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_AARCH64_MUSL_BLEEDING_EDGE=y
BR2_PACKAGE_TINI=y
EOF
make olddefconfig
make tini
```
This patch adds the upstream commit [1], that fixes this issue by
including `libgen.h`.
[1] 924c4bd602
Fixes: https://autobuild.buildroot.org/results/f0d/f0d10cd25f3b0e2a4af7266f7417b339ea5d242a
Signed-off-by: Thomas Perale <thomas.perale@mind.be>
Signed-off-by: Romain Naour <romain.naour@smile.fr>
(cherry picked from commit 064f7592d3)
Signed-off-by: Thomas Perale <thomas.perale@mind.be>
eeac9d5935