[gtk/carlosgc/clipboard-crash] clipboard: Fix a crash when GdkContentProviderUnion doesn't support the given data format

[Carlos Garcia Campos <carlosgc src gnome org>]

commit 50b70298c0100fb49fbe4ac20f7f2574e7837e9d
Author: Carlos Garcia Campos <cgarcia igalia com>
Date:   Thu Mar 25 15:10:00 2021 +0100

    clipboard: Fix a crash when GdkContentProviderUnion doesn't support the given data format
    
    After iterating all the providers, all of them returning unsupported
    error, gdk_content_provider_union_get_value() returns FALSE without
    filing the given GError. Then gdk_clipboard_read_value_internal()
    assumes there's a GError when FALSE is returned and
    g_task_return_error() fails. We can just chain up to parent
    implementation to ensure the GError is filled with unsupported error.

 gdk/gdkcontentproviderimpl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gdk/gdkcontentproviderimpl.c b/gdk/gdkcontentproviderimpl.c
index df9525e9e6..9c337c7b77 100644
--- a/gdk/gdkcontentproviderimpl.c
+++ b/gdk/gdkcontentproviderimpl.c
@@ -349,7 +349,7 @@ gdk_content_provider_union_get_value (GdkContentProvider  *provider,
       g_clear_error (&provider_error);
     }
 
-  return FALSE;
+  return GDK_CONTENT_PROVIDER_CLASS (gdk_content_provider_union_parent_class)->get_value (provider, value, 
error);
 }
 
 static void