color plane: Don't allocate 0-size textures

This triggers critials, and does us no good.

diff --git a/gtk/gtkcolorplane.c b/gtk/gtkcolorplane.c
index 17f658c9aced829bfa7c3d931d5ac177bd96ee72..8cf817eb1af0f68cc83cc137625af41c350aa832 100644 (file)
--- a/gtk/gtkcolorplane.c
+++ b/gtk/gtkcolorplane.c
@@ -129,6 +129,9 @@ create_texture (GtkColorPlane *plane)
   width = gtk_widget_get_width (widget);
   height = gtk_widget_get_height (widget);
 
+  if (width == 0 || height == 0)
+    return;
+
   g_clear_object (&plane->priv->texture);
 
   stride = width * 4;