Update glTFImporter.cpp

Replace tabs by spaces.

code/glTF/glTFImporter.cpp

@@ -680,7 +680,7 @@ void glTFImporter::ImportEmbeddedTextures(glTF::Asset& r)
         size_t length = img.GetDataLength();
         void* data = img.StealData();
 
-		tex->mFilename = img.name;
+        tex->mFilename = img.name;
         tex->mWidth = static_cast<unsigned int>(length);
         tex->mHeight = 0;
         tex->pcData = reinterpret_cast<aiTexel*>(data);