[PATCH testsuite] tests/inet_socket/connect.c: add missing include for bool

The below commit added a usage of the bool type to
tests/inet_socket/connect.c, but didn't add the corresponding stdlib
include (<stdbool.h>). This problem seems to be masked on Fedora (likely
some other header file includes <stdbool.h> internally), but for example
on CentOS 10 or 9 the compilation fails because of it.

Fix it by adding the missing include.

Fixes: 433c597a6a9a ("tests/inet_socket: add tests for TCP Fast Open")
Signed-off-by: Ondrej Mosnacek <[email protected]>
---
 tests/inet_socket/connect.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/inet_socket/connect.c b/tests/inet_socket/connect.c
index 067d196..89e85ef 100644
--- a/tests/inet_socket/connect.c
+++ b/tests/inet_socket/connect.c
@@ -3,6 +3,7 @@
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <stdlib.h>
+#include <stdbool.h>
 #include <stdio.h>
 #include <stddef.h>
 #include <string.h>
-- 
2.55.0