add const accessor to Inventory

Tactical/Soldier Control.cpp

@@ -378,6 +378,10 @@ unsigned int Inventory::size( ) const {
 	return inv.size( );
 }
 
+auto Inventory::get() const -> const std::vector<OBJECTTYPE>& {
+	return inv;
+}
+
 // Assignment operator
 Inventory& Inventory::operator=(const Inventory& src)
 {

Tactical/Soldier Control.h

@@ -772,6 +772,9 @@ public:
 	// How any slots are there in this inventory?
 	unsigned int size() const;
 
+	// const-only accessor
+	auto get() const -> const std::vector<OBJECTTYPE>&;
+
 	//temporarily? public
 	std::vector<int>			bNewItemCount;
 	std::vector<int>			bNewItemCycleCount;