Fix bug in Map::placeCreature when using extended positions

[Mkalo]

Pull Request Prelude

• I have followed proper The Forgotten Server code styling.
• I have read and understood the contribution guidelines before making this PR.
• I am aware that this PR may be closed if the above-mentioned criteria are not fulfilled.

Changes Proposed

The shuffle done in here:

forgottenserver/src/map.cpp

Lines 211 to 214 in 6c3c327

	if (extendedPos) {
	std::shuffle(relList.begin(), relList.begin() + 4, getRandomGenerator());
	std::shuffle(relList.begin() + 4, relList.end(), getRandomGenerator());
	} else {

Prioritizes the first 4 relative positions of the extendedRelList vector, and this worked properly before the changes in this commit that changed the order of the items in the vector: 214d432#diff-742a716324b97c7b673cb41a50625f5583e55761b4cd8bacaaadf2b2480d0050L170

[ranisalt]

Damn we missed you