Use xnif if its xkf is present even if xnif isn't

components/misc/resourcehelpers.cpp

@@ -134,7 +134,11 @@ std::string Misc::ResourceHelpers::correctActorModelPath(const std::string& resP
         mdlname.insert(mdlname.begin() + p + 1, 'x');
     else
         mdlname.insert(mdlname.begin(), 'x');
-    if (!vfs->exists(mdlname))
+    std::string kfname = mdlname;
+    if (kfname.size() > 4 && kfname.compare(kfname.size() - 4, 4, ".nif") == 0)
+        kfname.replace(kfname.size() - 4, 4, ".kf");
+
+    if (!vfs->exists(kfname))
     {
         return resPath;
     }

components/misc/resourcehelpers.hpp

@@ -28,7 +28,8 @@ namespace Misc
         std::string correctIconPath(std::string_view resPath, const VFS::Manager* vfs);
         std::string correctBookartPath(std::string_view resPath, const VFS::Manager* vfs);
         std::string correctBookartPath(std::string_view resPath, int width, int height, const VFS::Manager* vfs);
-        /// Use "xfoo.nif" instead of "foo.nif" if available
+        /// Use "xfoo.nif" instead of "foo.nif" if "xfoo.kf" is available
+        /// Note that if "xfoo.nif" is actually unavailable, we can't fall back to "foo.nif". :(
         std::string correctActorModelPath(const std::string& resPath, const VFS::Manager* vfs);
         std::string correctMeshPath(const std::string& resPath, const VFS::Manager* vfs);