#ifdef around variables to squelsh warnings.

tests/server/sockfilt.c

@@ -146,11 +146,25 @@ enum sockmode {
 
 typedef RETSIGTYPE (*SIGHANDLER_T)(int);
 
+#ifdef SIGHUP
 static SIGHANDLER_T old_sighup_handler  = SIG_ERR;
+#endif
+
+#ifdef SIGPIPE
 static SIGHANDLER_T old_sigpipe_handler = SIG_ERR;
+#endif
+
+#ifdef SIGALRM
 static SIGHANDLER_T old_sigalrm_handler = SIG_ERR;
+#endif
+
+#ifdef SIGINT
 static SIGHANDLER_T old_sigint_handler  = SIG_ERR;
+#endif
+
+#ifdef SIGTERM
 static SIGHANDLER_T old_sigterm_handler = SIG_ERR;
+#endif
 
 /* var which if set indicates that the program should finish execution */