Added -nolog for SDL2 to disable log.txt

src/sdl/i_main.c

@@ -199,6 +199,8 @@ int main(int argc, char **argv)
 	logdir = D_Home();
 
 #ifdef LOGMESSAGES
+	if (!M_CheckParm("-nolog"))
+	{
 #if defined(_WIN32_WCE) || defined(GP2X)
 		logstream = fopen(va("%s.log",argv[0]), "wt");
 #elif defined (_WII)
@@ -209,6 +211,7 @@ int main(int argc, char **argv)
 		else
 #endif
 			logstream = fopen("./log.txt", "wt");
+	}
 #endif
 
 	//I_OutputMsg("I_StartupSystem() ...\n");