blur-effect: Use int for opacity override

The opacity override can be -1 if no override is set, so use the
appropriate datatype here.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/991

diff --git a/src/shell-blur-effect.c b/src/shell-blur-effect.c
index e40bb542a29191943934a58f0b860ee9645e6e26..0022327467e838c6ad33372cbd55d2bc53f647df 100644 (file)
--- a/src/shell-blur-effect.c
+++ b/src/shell-blur-effect.c
@@ -158,7 +158,7 @@ struct _ShellBlurEffect
   ClutterEffect parent_instance;
 
   ClutterActor *actor;
-  uint8_t old_opacity_override;
+  int old_opacity_override;
 
   BlurData blur[2];