"stats.txt" file incorrectly generates for pwads that fail to load

[thecnoNSMB]

For instance, if you attempt to load a pwad that uses Doom 2 textures with Ultimate Doom as the iwad, dsda-doom v0.28.3 correctly quits with an error:

[clipped]
R_InitTextures: Missing patch 226 in texture SW2GSTON
R_InitTextures: Missing patch 310 in texture SW2HOTTexture errors: 329!
SCYTHE.WAD seems to be incompatible with The Ultimate DOOM.
Are you using the right IWAD?

but it still initializes the level table stats file (in this case, under dsda_doom_data/doom/scythe/stats.txt). This is mostly inconsequential for dsda-doom, at worst cluttering up the data folders and wasting a few kilobytes, but it can create confusion for any external tools that parse these files, and is probably not intended behavior.