libgltf: try to fix the MSVC2010 build
libgltf: try to fix the MSVC2010 build

Change-Id: I8dde439d19be45d5039904b6e917b17ca0ee4758

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core