use strict fixes

1 files changed, 7 insertions, 2 deletions

diff --git a/lib/ical.js b/lib/ical.js
index 5c7d740..b4f309e 100644
--- a/lib/ical.js
+++ b/lib/ical.js
@@ -31,7 +31,7 @@ ICAL.helpers = {
 
   dumpn: function() {
     if (!ICAL.debug) {
-      return;
+      return null;
     }
 
     if (typeof (console) !== 'undefined' && 'log' in console) {
@@ -2529,7 +2529,7 @@ ICAL.design = {
       if (!aComponent.hasProperty("DTSTART") ||
           !aComponent.hasProperty("TZOFFSETTO") ||
           !aComponent.hasProperty("TZOFFSETFROM")) {
-        return;
+        return null;
       }
 
       var dtstart = aComponent.getFirstProperty("DTSTART").getFirstValue();
@@ -2663,6 +2663,8 @@ ICAL.design = {
 
     utc_offset = to_zone.utc_offset(tt);
     tt.adjust(0, 0, 0, utc_offset);
+
+    return null;
   };
 
   ICAL.icaltimezone.fromData = function icaltimezone_fromData(aData) {
@@ -3558,7 +3560,10 @@ ICAL.design = {
         ICAL.helpers.dumpn("EICALPROP: " + this.toString() + "//" + e);
         ICAL.helpers.dumpn(e.stack);
       }
+
+      return null;
     },
+
     fromIcalProperty: function fromIcalProperty(aProp) {
       var propval = aProp.getFirstValue();
       this.fromData(propval);