Update gtkcssanimatedstyle.c
diff --git a/gtk/gtkcssanimatedstyle.c b/gtk/gtkcssanimatedstyle.c
index f1abcbe..7ce22c4 100644
--- a/gtk/gtkcssanimatedstyle.c
+++ b/gtk/gtkcssanimatedstyle.c
@@ -279,7 +279,7 @@
   if (_gtk_css_array_value_get_n_values (durations) == 1 &&
       _gtk_css_array_value_get_n_values (delays) == 1 &&
       _gtk_css_number_value_get (_gtk_css_array_value_get_nth (durations, 0), 100)
-      + _gtk_css_number_value_get (_gtk_css_array_value_get_nth (delays, transitions[i].index), 100) == 0)
+      + _gtk_css_number_value_get (_gtk_css_array_value_get_nth (delays, 0), 100) == 0)
     return animations;
 
   transition_infos_set (transitions, gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_TRANSITION_PROPERTY));