engine: psvita: check req in ioctlsocket()

engine/platform/psvita/net_psvita.h

@@ -1,5 +1,5 @@
 /*
-net.h - psvita network stubs
+net_psvita.h - psvita network stubs
 Copyright (C) 2021-2023 fgsfds
 
 This program is free software: you can redistribute it and/or modify
@@ -43,8 +43,12 @@ GNU General Public License for more details.
 
 // this is only used to set non-blocking on sockets
 static inline int ioctlsocket( int fd, int req, unsigned int *arg )
+{
+	if ( req == FIONBIO )
 	{
 		return setsockopt( fd, SOL_SOCKET, SO_NONBLOCK, arg, sizeof( *arg ) );
 	}
+	return -ENOSYS;
+}
 
 #endif // NET_PSVITA_H