fix di2 successful search continuity

src/raddbg/raddbg_core.h

@@ -230,6 +230,10 @@ struct RD_ViewState
   U8 query_buffer[KB(1)];
   U64 query_string_size;
   
+  // rjf: last successful query string state
+  U8 last_successful_query_buffer[KB(1)];
+  U64 last_successful_query_string_size;
+  
   // rjf: contents are focused (disables query focus)
   B32 contents_are_focused;
 };