ZP-270 #comment indirect modification of StateObject instance variable throws warnings #time 15m

git-svn-id: https://z-push.org/svn/z-push/trunk@1499 b7dd7b3b-3a3c-0410-9da9-bee62a6cc5b5

src/lib/core/syncparameters.php

@@ -260,7 +260,9 @@ class SyncParameters extends StateObject {
 
         // remove potential old default CPO if available
         if (isset($this->contentParameters[self::DEFAULTOPTIONS]) && $options != self::DEFAULTOPTIONS && $options !== self::SMSOPTIONS) {
-            unset($this->contentParameters[self::DEFAULTOPTIONS]);
+            $a = $this->contentParameters;
+            unset($a[self::DEFAULTOPTIONS]);
+            $this->contentParameters = $a;
             ZLog::Write(LOGLEVEL_DEBUG, "SyncParameters->UseCPO(): removed existing DEFAULT CPO as it is obsolete");
         }