Follow that Dialog#contents_width has been renamed to #width

Author: aycabta

lib/irb/input-method.rb

@@ -360,7 +360,7 @@ def auto_indent(&block)
       formatter.width = width
       contents = doc.accept(formatter).split("\n")
 
-      x = cursor_pos_to_render.x + autocomplete_dialog.contents_width
+      x = cursor_pos_to_render.x + autocomplete_dialog.width
       x = cursor_pos_to_render.x - width if x + width >= screen_width
       y = cursor_pos_to_render.y + pointer - autocomplete_dialog.scroll_top
       DialogRenderInfo.new(pos: Reline::CursorPos.new(x, y), contents: contents, bg_color: '49')