[gtk] css: Go back to clearing out selectors



commit 55cfeccfd251417e74fe56a5c99b5aa3c3217bd0
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jan 18 17:55:58 2020 -0500

    css: Go back to clearing out selectors
    
    Now that we use the selector tree for change computation
    again, we don't need the ruleset selectors anymore.
    Bring back the code that cleans them out.

 gtk/gtkcssprovider.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)
---
diff --git a/gtk/gtkcssprovider.c b/gtk/gtkcssprovider.c
index ee5085dd3f..5201e00c0a 100644
--- a/gtk/gtkcssprovider.c
+++ b/gtk/gtkcssprovider.c
@@ -984,6 +984,18 @@ gtk_css_provider_postprocess (GtkCssProvider *css_provider)
 
   priv->tree = _gtk_css_selector_tree_builder_build (builder);
   _gtk_css_selector_tree_builder_free (builder);
+
+#ifndef VERIFY_TREE
+  for (i = 0; i < priv->rulesets->len; i++)
+    {
+      GtkCssRuleset *ruleset;
+
+      ruleset = &g_array_index (priv->rulesets, GtkCssRuleset, i);
+
+      _gtk_css_selector_free (ruleset->selector);
+      ruleset->selector = NULL;
+    }
+#endif
 }
 
 static void


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