Take into account NonstopSession parameter when printing the session schedule

Author: msmat0

quickfixj-core/src/main/java/quickfix/DefaultSessionSchedule.java

@@ -331,7 +331,11 @@ public String toString() {
 
     private void formatTimeInterval(StringBuilder buf, TimeInterval timeInterval,
                                     SimpleDateFormat timeFormat, boolean local) {
-        if (isWeekdaySession) {
+        if (isNonStopSession) {
+            buf.append("nonstop (NonstopSession is active)");
+            return;
+        }
+        else if (isWeekdaySession) {
             try {
                 for (int i = 0; i < weekdayOffsets.length; i++) {
                     buf.append(DayConverter.toString(weekdayOffsets[i]));