Fix REPL's prev line capturing

Author: st0012

lib/debug/session.rb

@@ -1777,10 +1777,7 @@ def after_fork_parent
     end
 
     def capture_tui_data(tui_data)
-      if tui_data
-        tui_data[:repl] = "#{prompt}#{@repl_prev_line}"
-        @ui.store_tui_data(tui_data)
-      end
+      @ui.store_tui_data(tui_data) if tui_data
     end
 
     SUPPORTED_WINDOWS = {