Statue continues to follow the hero when picking a treasure

Created by: christopho

Bug report from garsim:

I found a little bug in the 1.6.2 version of Mystery of Solarus XD (the one I found on solarus-games this morning). In the cave with the bomb bag, we can push and pull the statues to obtain it. But when I push a statue on the bomb bag, I obtain it... and the statue follows me until it's blocked by another obstacle. The game can be continued after this bug, so it's not a frustrating one. I don't know if it's voluntary (in this game, we never know... ;D) but it's a little strange.