message: Removes duplication from the MineVein declarations by using auto
diff: @@ -149,7 +149,7 @@ void Mine::miningRareMinerals(bool _b)
  */
  void Mine::increaseDepth()
  {
  - MineVein vein;
  + auto vein = MineVein{0,0,0,0};
  switch (productionRate())
  {
  @@ -346,7 +346,7 @@ void Mine::deserialize(NAS2D::Xml::XmlElement* _ti)
  mVeins.resize(depth);
  for (XmlNode* vein = _ti->firstChild(); vein != nullptr; vein = vein->nextSibling())
  {
  - MineVein _mv = MineVein{0, 0, 0, 0};
  + auto _mv = MineVein{0, 0, 0, 0};
  attribute = vein->toElement()->firstAttribute();
  int id = 0;
  while (attribute)
  