[gnome-todo/wip/sadiq/gtk4] color-button: Adapt to GTK4 API changes

[Mohammed Sadiq <pksadiq src gnome org>]

commit 42cfc9c9f1601827a3629bd88c56a65e030a7ca1
Author: Mohammed Sadiq <sadiq sadiqpk org>
Date:   Wed Dec 12 08:18:55 2018 +0530

    color-button: Adapt to GTK4 API changes
    
    size-allocate() vfunc signature has been changed some time back.
    Let's adapt to the changes.

 src/widgets/gtd-color-button.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)
---
diff --git a/src/widgets/gtd-color-button.c b/src/widgets/gtd-color-button.c
index 880d3de..f118f9f 100644
--- a/src/widgets/gtd-color-button.c
+++ b/src/widgets/gtd-color-button.c
@@ -88,13 +88,19 @@ gtd_color_button_measure (GtkWidget      *widget,
 }
 
 static void
-gtd_color_button_size_allocate (GtkWidget           *widget,
-                                const GtkAllocation *allocation,
-                                gint                 baseline)
+gtd_color_button_size_allocate (GtkWidget *widget,
+                                gint       width,
+                                gint       height,
+                                gint       baseline)
 {
   GtdColorButton *self = GTD_COLOR_BUTTON (widget);
+  GtkAllocation allocation;
 
-  gtk_widget_size_allocate (self->selected_icon, allocation, baseline);
+  allocation.x = allocation.y = 0;
+  allocation.width = width;
+  allocation.height = height;
+
+  gtk_widget_size_allocate (self->selected_icon, &allocation, baseline);
 }
 
 static void