test-date: add missing header

```
[587/2863] Compiling C object test-date.p/src_test_test-date.c.o
FAILED: test-date.p/src_test_test-date.c.o
cc -Itest-date.p -I. -I.. -Isrc/basic -I../src/basic -Isrc/fundamental -I../src/fundamental -Isrc/systemd -I../src/systemd -I../src/libsystemd/sd-bus -I../src/libsystemd/sd-device -I../src/libsystemd/sd-event -I../src/libsystemd/sd-hwdb -I../src/libsystemd/sd-id128 -I../src/libsystemd/sd-journal -I../src/libsystemd/sd-netlink -I../src/libsystemd/sd-network -I../src/libsystemd/sd-resolve -Isrc/shared -I../src/shared -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wextra -std=gnu11 -O0 -g -Wno-missing-field-initializers -Wno-unused-parameter -Wno-nonnull-compare -Warray-bounds -Warray-bounds=2 -Wdate-time -Wendif-labels -Werror=format=2 -Werror=format-signedness -Werror=implicit-function-declaration -Werror=implicit-int -Werror=incompatible-pointer-types -Werror=int-conversion -Werror=missing-declarations -Werror=missing-prototypes -Werror=overflow -Werror=override-init -Werror=return-type -Werror=shift-count-overflow -Werror=shift-overflow=2 -Werror=undef -Wfloat-equal -Wimplicit-fallthrough=5 -Winit-self -Wlogical-op -Wmissing-include-dirs -Wmissing-noreturn -Wnested-externs -Wold-style-definition -Wpointer-arith -Wredundant-decls -Wshadow -Wstrict-aliasing=2 -Wstrict-prototypes -Wsuggest-attribute=noreturn -Wunused-function -Wwrite-strings -Wzero-length-bounds -fdiagnostics-show-option -fno-common -fstack-protector -fstack-protector-strong --param=ssp-buffer-size=4 -Wno-unused-result -Werror=shadow -fno-strict-aliasing -fvisibility=hidden -fno-omit-frame-pointer -include config.h -DTEST_CODE=1 -MD -MQ test-date.p/src_test_test-date.c.o -MF test-date.p/src_test_test-date.c.o.d -o test-date.p/src_test_test-date.c.o -c ../src/test/test-date.c
../src/test/test-date.c: In function ‘main’:
../src/test/test-date.c:86:13: error: implicit declaration of function ‘access’; did you mean ‘accept’? [-Werror=implicit-function-declaration]
   86 |         if (access("/usr/share/zoneinfo/Asia/Seoul", F_OK) >= 0) {
      |             ^~~~~~
      |             accept
../src/test/test-date.c:86:13: warning: nested extern declaration of ‘access’ [-Wnested-externs]
../src/test/test-date.c:86:54: error: ‘F_OK’ undeclared (first use in this function)
   86 |         if (access("/usr/share/zoneinfo/Asia/Seoul", F_OK) >= 0) {
      |                                                      ^~~~
../src/test/test-date.c:86:54: note: each undeclared identifier is reported only once for each function it appears in
cc1: some warnings being treated as errors
ninja: build stopped: subcommand failed.
```

Fixes ae4088b23e1658a6f6e940d6e1c8d0a14f93449b

diff --git a/src/test/test-date.c b/src/test/test-date.c
index 2b96983e2cb612fd101db7aed2f80e6629e30e2d..c7d239e22fde8d8249201451edd1984bfe08389b 100644 (file)
--- a/src/test/test-date.c
+++ b/src/test/test-date.c
@@ -1,5 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 
+#include <unistd.h>
+
 #include "alloc-util.h"
 #include "string-util.h"
 #include "tests.h"