build: allow NTLM tests to run on more build configurations

lib/setup.h

@@ -356,6 +356,18 @@
 #  endif
 #endif
 
+/*
+ * Arg 2 type for gethostname in case it hasn't been defined in config file.
+ */
+
+#ifndef GETHOSTNAME_TYPE_ARG2
+#  ifdef USE_WINSOCK
+#    define GETHOSTNAME_TYPE_ARG2 int
+#  else
+#    define GETHOSTNAME_TYPE_ARG2 size_t
+#  endif
+#endif
+
 /* Below we define some functions. They should
 
    4. set the SIGALRM signal timeout