Codechange: Replace FOR_ALL_CARGOSPECS with range-based for loops

(cherry picked from commit 9a8756d7ed)

src/economy.cpp

@@ -848,8 +848,7 @@ void RecomputePrices()
 	}
 
 	/* Setup cargo payment */
-	CargoSpec *cs;
-	FOR_ALL_CARGOSPECS(cs) {
+	for (CargoSpec *cs : CargoSpec::Iterate()) {
 		cs->current_payment = ((int64)cs->initial_payment * _economy.inflation_payment) >> 16;
 	}