From coverity: use getParamValue instead of getParam().getValue() to avoid null dereference

git-svn-id: http://svn.code.sf.net/p/davmail/code/trunk@2235 3d1905a2-6b24-0410-a738-b14d5a86fcbd

src/java/davmail/exchange/VCalendar.java

@@ -479,8 +479,7 @@ public class VCalendar extends VObject {
                         // than PARTSTAT=NEEDS-ACTION since the RSVP confuses iCal4 into
                         // thinking the attendee has not replied
                         if (isCurrentUser(property) && property.hasParam("RSVP", "TRUE")) {
-                            VProperty.Param partstat = property.getParam("PARTSTAT");
-                            if (partstat == null || !"NEEDS-ACTION".equals(partstat.getValue())) {
+                            if (!"NEEDS-ACTION".equals(property.getParamValue("PARTSTAT"))) {
                                 property.removeParam("RSVP");
                             }
                         }
@@ -733,7 +732,7 @@ public class VCalendar extends VObject {
                 String attendeeEmail = getEmailValue(property);
                 if (email.equalsIgnoreCase(attendeeEmail) && property.hasParam("PARTSTAT")) {
                     // found current user attendee line
-                    status = property.getParam("PARTSTAT").getValue();
+                    status = property.getParamValue("PARTSTAT");
                     break;
                 }
             }

src/java/davmail/exchange/VProperty.java

@@ -47,7 +47,7 @@ public class VProperty {
             values.addAll(paramValues);
         }
 
-        public String getValue() {
+        protected String getValue() {
             if (values != null && !values.isEmpty()) {
                 return values.get(0);
             } else {