Added assertions to Array to catch situations where a reference to a member is passed into an add() method. Also changed the form of StringArray method params to avoid this problem.

modules/juce_data_structures/values/juce_ValueWithDefault.h

@@ -209,6 +209,7 @@ private:
         jassert (delimiter.isNotEmpty());
 
         StringArray elements;
+
         for (auto& v : input)
             elements.add (v.toString());