Comment on purpose of used of ValueExists when reading registry values

Source commit: 2f46b348464a667987d8093deed1104ae0fb9b2a

source/core/HierarchicalStorage.cpp

@@ -13,6 +13,7 @@
 //---------------------------------------------------------------------------
 #pragma package(smart_init)
 //---------------------------------------------------------------------------
+// ValueExists test was probably added to avoid registry exceptions when debugging
 #define READ_REGISTRY(Method) \
   if (FRegistry->ValueExists(Name)) \
   try { return FRegistry->Method(Name); } catch(...) { return Default; } \