Merge pull request #357 from negativeExponent/3ds_buildfix

Fix build when compiling without NTSC filter support

src/drivers/libretro/libretro.c

@@ -970,7 +970,11 @@ void retro_get_system_av_info(struct retro_system_av_info *info)
 #endif
    info->geometry.base_width = width;
    info->geometry.base_height = height;
+#ifdef HAVE_NTSC_FILTER
    info->geometry.max_width = (use_ntsc ? NTSC_WIDTH : NES_WIDTH);
+#else
+   info->geometry.max_width = NES_WIDTH;
+#endif
    info->geometry.max_height = NES_HEIGHT;
    info->geometry.aspect_ratio = (float)(use_par ? NES_8_7_PAR : NES_4_3);
    info->timing.sample_rate = (float)sndsamplerate;