apply some code analyzer recommendations

libs/core/cdutils_c.cpp

@@ -31,7 +31,7 @@ void CInterface::autoConnect(PIObject * o, const PIString & prefix) {
 		// piCout << "func" << it.value().func_name;
 	}
 	PIVector<CDType *> cl = C.root().children();
-	piForeachC(CDType * c, cl) {
+	for (const auto * c: cl) {
 		PIString cp = prefix + c->pathString().join("_");
 		if (cp.isEmpty()) continue;
 		if (!eh_map.contains(cp)) continue;