Compile error passing argument 1; incompatible pointer type

[Boris00035]

../gimp/app/widgets/gimpcolordialog.c: In function ‘gimp_color_dialog_show’:
../gimp/app/widgets/gimpcolordialog.c:824:40: error: passing argument 1 of ‘gimp_color_dialog_style_updated’ from incompatible pointer type [-Wincompatible-pointer-types]
  824 |       gimp_color_dialog_style_updated (dialog);
      |                                        ^~~~~~
      |                                        |
      |                                        GimpColorDialog * {aka struct _GimpColorDialog *}
../gimp/app/widgets/gimpcolordialog.c:337:45: note: expected ‘GtkWidget *’ {aka ‘struct _GtkWidget *’} but argument is of type ‘GimpColorDialog *’ {aka ‘struct _GimpColorDialog *’}
  337 | gimp_color_dialog_style_updated (GtkWidget *widget)
      |                                  ~~~~~~~~~~~^~~~~~
[ 54% | 1402<1<1183 | 10.8bps ] Compiling C object app/widgets/libappwidgets.a.p/gimpcolordisplayeditor.c.o
ninja: build stopped: subcommand failed.
==> ERROR: A failure occurred in build().

[Boris00035]

Same on gimp-develop-git.

[Boris00035]

gimp-devel gimp-devel AUR does compile.