testers: add missing #include <unistd.h> (#12862)

FreeBSD clang needs the header to be included for read(), write(),
pipe(), close(), etc.

hyprtester/clients/child-window.cpp

@@ -3,6 +3,7 @@
 #include <sys/mman.h>
 #include <fcntl.h>
 #include <stdio.h>
+#include <unistd.h>
 
 #include <wayland-client.h>
 #include <wayland.hpp>
@@ -332,4 +333,4 @@ int main(int argc, char** argv) {
 
     wl_display_disconnect(display);
     return 0;
-}
+}

hyprtester/clients/pointer-scroll.cpp

@@ -2,6 +2,7 @@
 #include <sys/poll.h>
 #include <sys/mman.h>
 #include <fcntl.h>
+#include <unistd.h>
 #include <print>
 #include <format>
 #include <string>

hyprtester/clients/pointer-warp.cpp

@@ -2,6 +2,7 @@
 #include <sys/poll.h>
 #include <sys/mman.h>
 #include <fcntl.h>
+#include <unistd.h>
 #include <print>
 #include <format>
 #include <string>

hyprtester/src/tests/clients/child-window.cpp

@@ -8,6 +8,7 @@
 #include <hyprutils/os/Process.hpp>
 
 #include <sys/poll.h>
+#include <unistd.h>
 #include <csignal>
 #include <thread>
 
@@ -120,4 +121,4 @@ static bool test() {
     return !ret;
 }
 
-REGISTER_CLIENT_TEST_FN(test);
+REGISTER_CLIENT_TEST_FN(test);

hyprtester/src/tests/clients/pointer-scroll.cpp

@@ -8,6 +8,7 @@
 #include <hyprutils/os/Process.hpp>
 
 #include <sys/poll.h>
+#include <unistd.h>
 #include <csignal>
 #include <thread>
 

hyprtester/src/tests/clients/pointer-warp.cpp

@@ -8,6 +8,7 @@
 #include <hyprutils/os/Process.hpp>
 
 #include <sys/poll.h>
+#include <unistd.h>
 #include <csignal>
 #include <thread>
 

hyprtester/src/tests/main/window.cpp

@@ -1,3 +1,4 @@
+#include <unistd.h>
 #include <cmath>
 #include <chrono>
 #include <cstdlib>