Fixed possible NotNull annotation violation in `TexifyUtil#getReferencedFiles`
Fixed possible NotNull annotation violation in `TexifyUtil#getReferencedFiles`

Ruben-Sten/TeXiFy-IDEA,Ruben-Sten/TeXiFy-IDEA,Ruben-Sten/TeXiFy-IDEA,Ruben-Sten/TeXiFy-IDEA