* typeck.c (maybe_warn_pessimizing_move): See if the maybe-rvalue
	overload resolution would actually succeed.

	* g++.dg/cpp0x/Wredundant-move1.C (fn4): Drop dg-warning.
	* g++.dg/cpp0x/Wredundant-move7.C: New test.

From-SVN: r269427