--- libssh2-1.10.0/tests/openssh_fixture.c	2021-08-28 23:15:14.000000000 +0200
+++ libssh2-1.10.0/tests/openssh_fixture.c	2023-02-16 22:29:11.450599958 +0100
@@ -212,8 +212,10 @@ static unsigned int portable_sleep(unsig
 {
 #ifdef WIN32
     Sleep(seconds);
+
+    return 0;
 #else
-    sleep(seconds);
+    return sleep(seconds);
 #endif
 }