gtk.cfg: Fix gtk_widget_destroy definition and usage

gtk_widget_destroy is only for GtkWidget derived objects, and in
practice should only be used for GtkWindow derived widgets (it is
replaced with gtk_window_destroy in gtk4).

Author: Tamaranch

cfg/gtk.cfg

@@ -910,7 +910,6 @@
     <alloc init="true" no-fail="true">g_zlib_decompressor_new</alloc>
     <use>g_object_ref</use>
     <dealloc>g_object_unref</dealloc>
-    <dealloc>gtk_widget_destroy</dealloc>
   </memory>
   <memory>
     <alloc init="true" no-fail="true">g_tree_new</alloc>
@@ -926,6 +925,10 @@
     <use>g_file_attribute_matcher_ref</use>
     <dealloc>g_file_attribute_matcher_unref</dealloc>
   </memory>
+  <memory>
+    <alloc init="true" no-fail="true">gtk_window_new</alloc>
+    <dealloc>gtk_widget_destroy</dealloc>
+  </memory>
   <function name="g_exit">
     <noreturn>true</noreturn>
   </function>
@@ -9688,6 +9691,14 @@
     <leak-ignore/>
     <noreturn>false</noreturn>
   </function>
+  <function name="gtk_window_new">
+    <noreturn>false</noreturn>
+    <use-retval/>
+    <returnValue type="GtkWidget *"/>
+    <arg nr="1">
+      <not-bool/>
+    </arg>
+  </function>
   <function name="gtk_window_list_toplevels">
     <leak-ignore/>
     <noreturn>false</noreturn>
@@ -21130,10 +21141,6 @@
     <leak-ignore/>
     <noreturn>false</noreturn>
   </function>
-  <function name="gtk_widget_destroy">
-    <leak-ignore/>
-    <noreturn>false</noreturn>
-  </function>
   <function name="gtk_widget_destroyed">
     <leak-ignore/>
     <noreturn>false</noreturn>

test/cfg/gtk.c

@@ -581,3 +581,9 @@ void g_tree_test() {
     printf("%p\n", tree2);
     // cppcheck-suppress memleak
 }
+
+void gtk_widget_destroy_test() {
+    GtkWidget *widget = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+    gtk_widget_show(widget);
+    gtk_widget_destroy(widget);
+}