[os2]: Make anonymous pipes always inheritable

core/os/os2/pipe_linux.odin

@@ -5,7 +5,7 @@ import "core:sys/linux"
 
 _pipe :: proc() -> (r, w: ^File, err: Error) {
 	fds: [2]linux.Fd
-	errno := linux.pipe2(&fds, {.CLOEXEC})
+	errno := linux.pipe2(&fds, {})
 	if errno != .NONE {
 		return nil, nil,_get_platform_error(errno)
 	}

core/os/os2/pipe_windows.odin

@@ -5,7 +5,11 @@ import win32 "core:sys/windows"
 
 _pipe :: proc() -> (r, w: ^File, err: Error) {
 	p: [2]win32.HANDLE
-	if !win32.CreatePipe(&p[0], &p[1], nil, 0) {
+	sa := win32.SECURITY_ATTRIBUTES {
+		nLength = size_of(win32.SECURITY_ATTRIBUTES),
+		bInheritHandle = true,
+	}
+	if !win32.CreatePipe(&p[0], &p[1], &sa, 0) {
 		return nil, nil, _get_platform_error()
 	}
 	return new_file(uintptr(p[0]), ""), new_file(uintptr(p[1]), ""), nil