Copy particleNorms before resizing

This is more a question than an definite bug report or PR.

Shouldn't the normals, if they exist, be copied to the particleNorms before particleNorms is resized? Or is the intention that if the number of normals and vertices differ then all of the particleNorms are populated with <1, 0, 0>?

src/NifFile.cpp

@@ -1382,9 +1382,9 @@ OptResult NifFile::OptimizeFor(OptOptions& options) {
 														   + static_cast<uint32_t>(triangles.size()) * 3;
 							bsOptShape->particleVerts = *vertices;
 
-							bsOptShape->particleNorms.resize(vertices->size(), Vector3(1.0f, 0.0f, 0.0f));
-							if (normals && normals->size() == vertices->size())
+							if (normals)
 								bsOptShape->particleNorms = *normals;
+							bsOptShape->particleNorms.resize(vertices->size(), Vector3(1.0f, 0.0f, 0.0f));
 
 							bsOptShape->particleTris = triangles;
 						}