Readd Client::sendPlayerPos optimization (was part of 81c7f0a)

This reverts commit b49dfa9.

Author: sfan5

src/client/client.cpp

@@ -1275,9 +1275,8 @@ void Client::sendPlayerPos()
 	// Save bandwidth by only updating position when
 	// player is not dead and something changed
 
-	// FIXME: This part causes breakages in mods like 3d_armor, and has been commented for now
-	// if (m_activeobjects_received && player->isDead())
-	//	return;
+	if (m_activeobjects_received && player->isDead())
+		return;
 
 	if (
 			player->last_position     == player->getPosition() &&