ndb - bug#28642 - Tablespace returning incorrect usage status

  make free 64 bit (as it represents free bytes, not free extents as originally designed)

storage/ndb/src/ndbapi/NdbDictionaryImpl.hpp

@@ -390,7 +390,7 @@ struct NdbFileImpl : public NdbDictObjectImpl {
   NdbFileImpl(NdbDictionary::Object::Type t);
 
   Uint64 m_size;
-  Uint32 m_free;
+  Uint64 m_free;
   BaseString m_path;
   BaseString m_filegroup_name;
   Uint32 m_filegroup_id;