Some slight cleanup for KTX image loader

3rdParty/CMakeLists.txt

@@ -34,14 +34,17 @@ add_subdirectory(libjpeg-turbo)
 add_subdirectory(msdf)
 add_subdirectory(eastl)
 add_subdirectory(moodycamel_concurrentqueue)
+add_subdirectory(tinyusdz)
+add_subdirectory(dds_image)
+
 if (NOT IOS AND ENABLE_CURL)
     add_subdirectory(curl)
 endif()
 
-if(ENABLE_TEST)
+if (ENABLE_TEST)
     add_subdirectory(catch2)
-endif()
+endif ()
 
-add_subdirectory(tinyusdz)
-add_subdirectory(ktx-software)
-add_subdirectory(dds_image)
+if (ENABLE_KTX)
+    add_subdirectory(ktx-software)
+endif ()