Fix warning related to nested-anon-types.

Signed-off-by: Jackie9527 <80555200+Jackie9527@users.noreply.github.com>

code/AssetLib/glTF/glTFAsset.h

@@ -513,21 +513,22 @@ struct Camera : public Object {
     };
 
     Type type;
-
-    union {
-        struct {
+    struct Perspective {
         float aspectRatio; //!<The floating - point aspect ratio of the field of view. (0 = undefined = use the canvas one)
         float yfov; //!<The floating - point vertical field of view in radians. (required)
         float zfar; //!<The floating - point distance to the far clipping plane. (required)
         float znear; //!< The floating - point distance to the near clipping plane. (required)
-        } perspective;
+    };
 
-        struct {
+    struct Ortographic {
         float xmag; //! The floating-point horizontal magnification of the view. (required)
         float ymag; //! The floating-point vertical magnification of the view. (required)
         float zfar; //! The floating-point distance to the far clipping plane. (required)
         float znear; //! The floating-point distance to the near clipping plane. (required)
-        } ortographic;
+    };
+    union {
+        struct Perspective perspective;
+        struct Ortographic ortographic;
     };
 
     Camera() = default;

code/CMakeLists.txt

@@ -1254,7 +1254,6 @@ IF (ASSIMP_WARNINGS_AS_ERRORS)
         -Wno-implicit-fallthrough
         -Wno-unused-template
         -Wno-undefined-func-template
-        -Wno-nested-anon-types
         -Wno-declaration-after-statement
       )
     ELSE()