Small update to train reversal patch

Without a break, choochoo will be encountered again, but the carriages will be in the desired order after a reversal, accomplishing nothing. Adding a break is a small optimization and is more logical to the desired behavior.

maps/mountain_fortress_v3/icw/functions.lua

@@ -982,6 +982,7 @@ function Public.construct_train(icw, carriages)
                   n = n + 1
                   m = m - 1
                 end
+                break
             end
         end
     end