Switched from _exit to exit in the sigintHandler.

Not sure why I ended up with _exit. Perhaps an unlucky keypress, but it's the incorrect function to use in this case.

src/server/SilverMUDServer.c

@@ -32,7 +32,7 @@ typedef struct sockaddr sockaddr;
 void sigintHandler(int signal)
 {
 	printf("Caught signal %d.\n", signal);
-	_exit(EXIT_SUCCESS);
+	exit(EXIT_SUCCESS);
 }
 
 int main(int argc, char ** argv)