str_comp_filenames("historic_maps/cb_cp/ChillBlock5", "historic_maps/cb_cp/ChillBlock5");
causes the following error:
```
=================================================================
==108107==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffe71e6aa00 at pc 0x55be3668c69c bp 0x7ffe71e6a780 sp 0x7ffe71e6a778
READ of size 1 at 0x7ffe71e6aa00 thread T0
#0 0x55be3668c69b in str_comp_filenames /home/chill...