Replace auto_ptr

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit d6118d8a63)

kmines/solver/advFastRules.cpp

@@ -81,7 +81,7 @@ bool AdviseFast::RuleSet::apply()
 {
 	while(!_rules.empty()){
 		set<Entry>::iterator i = _rules.begin();
-		std::auto_ptr<Rule>  r (this->newRule(*i));
+		std::unique_ptr<Rule>  r (this->newRule(*i));
 		_rules.erase(i);
 
 		if(r->apply(&this->_surePoints)) return true;