zdtm/socket_close_data01: wait a child before c/r

A static test should not change its state during C/R.
Signed-off-by: Andrew Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/zdtm/live/static/socket_close_data01.c

@@ -70,6 +70,15 @@ int main(int argc, char **argv)
 		client("(iter1)");
 		exit(0);
 	}
+	ret = 1;
+	if (wait(&status) == -1) {
+		fail("wait failed");
+		goto unlink;
+	}
+	if (status) {
+		pr_err("A child exited with 0x%x\n", status);
+		goto unlink;
+	}
 
 	test_daemon();
 	test_waitsig();
@@ -83,12 +92,6 @@ int main(int argc, char **argv)
 		goto unlink;
 	}
 
-	ret = 1;
-	if (wait(NULL) == -1) {
-		fail("wait failed");
-		goto unlink;
-	}
-
 	/* Test2: check it's still possible to connect to the bound socket */
 	if (fork() == 0) {
 		exit(client("(iter2)"));