Are people seriously suggesting Melo's shot selection on that last play in regulation cost us the game? Think about the very first play in overtime, when Felton drew a defender and fed a wide-open Chandler in the paint. There were at least 2 chances for Felton to do that towards the end of regulation, but he fired shots instead.
If you want to point blame, look at Felton's decision making, and to a lesser extent, JR Smith's.
Melo gave everything in this game.