Port away from Q_FOREACH.

CMakeLists.txt

 project(kreversi)
 cmake_minimum_required(VERSION 2.8.12 FATAL_ERROR)
-set (QT_MIN_VERSION "5.3.0")
+set (QT_MIN_VERSION "5.7.0")
 set (KF5_MIN_VERSION "5.15.0")
 
 find_package(ECM 1.7.0 REQUIRED NO_MODULE)

kreversigame.cpp

@@ -151,7 +151,7 @@ int KReversiGame::undo()
         setChipColor(KReversiMove(NoColor, move.row, move.col));
 
         // and change back the color of the rest chips
-        foreach(const KReversiMove & pos, lastUndo) {
+        for (const KReversiMove & pos : qAsConst(lastUndo)) {
             ChipColor opponentColor = Utils::opponentColorFor(m_cells[pos.row][pos.col]);
             setChipColor(KReversiMove(opponentColor, pos.row, pos.col));
         }