Merge pull request #153 from dionrhys/read-urandom-unbuffered

Ensure reads from /dev/urandom are unbuffered

code/sys/sys_unix.c

@@ -123,6 +123,8 @@ qboolean Sys_RandomBytes( byte *string, int len )
 	if( !fp )
 		return qfalse;
 
+	setvbuf( fp, NULL, _IONBF, 0 ); // don't buffer reads from /dev/urandom
+
 	if( fread( string, sizeof( byte ), len, fp ) != len )
 	{
 		fclose( fp );