apply some code analyzer recommendations

libs/qt/qcd_core.cpp

@@ -140,7 +140,7 @@ bool QCDCore::bindWidget(QWidget * w) {
 		return false;
 	}
 	PIVector<CDType *> ak = K.root().children();
-	piForeachC(CDType * k, ak) {
+	for (const auto * k: ak) {
 		if (!on.endsWith(PI2QString(k->pathString().join("_")))) continue;
 		if (bindWidget(w, *k)) return true;
 	}

libs/qt/qcd_view.cpp

@@ -344,7 +344,7 @@ void CDView::cd_receivedX() {
 	X.lock();
 	PIVector<PIDeque<int>> xl = X.enabledList();
 	// piCout << "X" << xl.size();
-	piForeachC(PIDeque<int> & x, xl) {
+	for (const auto & x: xl) {
 		CDType & t(X[x]);
 		// piCout << t;
 		// piCout << t.path();