Remove void* typedef in fx_freetype.h

There is a struct pointer that we use consistently.

Change-Id: I9aa42e330bcd5c98579b49ea81d54ce90a8a5f60
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/54750
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>
diff --git a/core/fxge/fx_freetype.h b/core/fxge/fx_freetype.h
index 59b59f5..cac3364 100644
--- a/core/fxge/fx_freetype.h
+++ b/core/fxge/fx_freetype.h
@@ -15,9 +15,10 @@
 #include FT_OUTLINE_H
 #include FT_TRUETYPE_TABLES_H
 
+using FXFT_LibraryRec = struct FT_LibraryRec_;
+using FXFT_Library = FXFT_LibraryRec*;
 using FXFT_FaceRec = struct FT_FaceRec_;
 using FXFT_Face = FXFT_FaceRec*;
-using FXFT_Library = void*;
 
 using FXFT_MM_Var = FT_MM_Var*;
 using FXFT_Open_Args = FT_Open_Args;