Added some base class initialisers to keep gcc 4.8.2 happy

modules/juce_core/containers/juce_DynamicObject.cpp

@@ -31,7 +31,7 @@ DynamicObject::DynamicObject()
 }
 
 DynamicObject::DynamicObject (const DynamicObject& other)
-    : properties (other.properties)
+   : ReferenceCountedObject(), properties (other.properties)
 {
 }
 

modules/juce_core/javascript/juce_Javascript.cpp

@@ -768,7 +768,7 @@ struct JavascriptEngine::RootObject   : public DynamicObject
     {
         FunctionObject() noexcept {}
 
-        FunctionObject (const FunctionObject& other)  : functionCode (other.functionCode)
+        FunctionObject (const FunctionObject& other)  : DynamicObject(), functionCode (other.functionCode)
         {
             ExpressionTreeBuilder tb (functionCode);
             tb.parseFunctionParamsAndBody (*this);