[gnome-software: 1/4] gs-age-rating-context-dialog: Clarify an invariant

[Milan Crha <mcrha src gnome org>]

commit 69f63a5aa362373400e0a4cc17b184fea862658e
Author: Philip Withnall <pwithnall endlessos org>
Date:   Fri Aug 13 16:28:19 2021 +0100

    gs-age-rating-context-dialog: Clarify an invariant
    
    This was otherwise giving a `-Wmaybe-uninitialized` warning for `age`.
    
    Signed-off-by: Philip Withnall <pwithnall endlessos org>

 src/gs-age-rating-context-dialog.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/src/gs-age-rating-context-dialog.c b/src/gs-age-rating-context-dialog.c
index 2eccd1d39..82526ab31 100644
--- a/src/gs-age-rating-context-dialog.c
+++ b/src/gs-age-rating-context-dialog.c
@@ -674,8 +674,9 @@ update_attributes_list (GsAgeRatingContextDialog *self)
        } else {
                guint age;
 
-               if (content_rating != NULL)
-                       age = as_content_rating_get_minimum_age (content_rating);
+               /* if content_rating is NULL, is_unknown should be TRUE */
+               g_assert (content_rating != NULL);
+               age = as_content_rating_get_minimum_age (content_rating);
 
                if (age == 0)
                        /* Translators: This is a dialogue title which indicates that an app is suitable