Fix error `resources_` may be used uninitialized

JsonArrayConst.hpp:29:56: error: 'array.ArduinoJson::V704HB22::JsonArrayConst::resources_' may be used uninitialized in this function [-Werror=maybe-uninitialized]
JsonObjectConst.hpp:62:56: error: 'null.ArduinoJson::V704HB22::JsonObjectConst::resources_' may be used uninitialized in this function [-Werror=maybe-uninitialized]

src/ArduinoJson/Array/JsonArrayConst.hpp

@@ -36,7 +36,7 @@ class JsonArrayConst : public detail::VariantOperators<JsonArrayConst> {
   }
 
   // Creates an unbound reference.
-  JsonArrayConst() : data_(0) {}
+  JsonArrayConst() : data_(0), resources_(0) {}
 
   // INTERNAL USE ONLY
   JsonArrayConst(const detail::ArrayData* data,

src/ArduinoJson/Object/JsonObjectConst.hpp

@@ -19,7 +19,7 @@ class JsonObjectConst : public detail::VariantOperators<JsonObjectConst> {
   typedef JsonObjectConstIterator iterator;
 
   // Creates an unbound reference.
-  JsonObjectConst() : data_(0) {}
+  JsonObjectConst() : data_(0), resources_(0) {}
 
   // INTERNAL USE ONLY
   JsonObjectConst(const detail::ObjectData* data,