Just a minimal fix, needs to be properly looked at given there
are a lot of instances of usage.

https://bugs.gentoo.org/970227
--- a/code/AssetLib/IFC/IFCLoader.cpp
+++ b/code/AssetLib/IFC/IFCLoader.cpp
@@ -52,3 +52,3 @@
 #ifndef ASSIMP_BUILD_NO_COMPRESSED_IFC
-#ifdef ASSIMP_USE_HUNTER
+#if 1
 #include <minizip/unzip.h>
--- a/code/Common/ZipArchiveIOSystem.cpp
+++ b/code/Common/ZipArchiveIOSystem.cpp
@@ -53,3 +53,3 @@
 
-#ifdef ASSIMP_USE_HUNTER
+#if 1
 #    include <minizip/unzip.h>