LibCore+Everywhere: Return ErrorOr from ConfigFile factory methods

I've attempted to handle the errors gracefully where it was clear how to
do so, and simple, but a lot of this was just adding
`release_value_but_fixme_should_propagate_errors()` in places.

2 files changed, 2 insertions, 2 deletions

diff --git a/Userland/Applications/ThemeEditor/PreviewWidget.cpp b/Userland/Applications/ThemeEditor/PreviewWidget.cpp
index 49ae0f3114..0c23c73ae1 100644
--- a/Userland/Applications/ThemeEditor/PreviewWidget.cpp
+++ b/Userland/Applications/ThemeEditor/PreviewWidget.cpp
@@ -141,7 +141,7 @@ void PreviewWidget::set_preview_palette(const Gfx::Palette& palette)
 
 void PreviewWidget::set_theme_from_file(Core::File& file)
 {
-    auto config_file = Core::ConfigFile::open(file.filename(), file.leak_fd());
+    auto config_file = Core::ConfigFile::open(file.filename(), file.leak_fd()).release_value_but_fixme_should_propagate_errors();
     auto theme = Gfx::load_system_theme(config_file);
     VERIFY(theme.is_valid());
 
diff --git a/Userland/Applications/ThemeEditor/main.cpp b/Userland/Applications/ThemeEditor/main.cpp
index 6c5e9de3ab..77bc9fb4ef 100644
--- a/Userland/Applications/ThemeEditor/main.cpp
+++ b/Userland/Applications/ThemeEditor/main.cpp
@@ -357,7 +357,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
 
         update_window_title();
         auto file = response.value();
-        auto theme = Core::ConfigFile::open(file->filename(), file->leak_fd());
+        auto theme = Core::ConfigFile::open(file->filename(), file->leak_fd()).release_value_but_fixme_should_propagate_errors();
         for (auto role : color_roles) {
             theme->write_entry("Colors", to_string(role), preview_widget.preview_palette().color(role).to_string());
         }