chore: cargo fmt on the stub binary

web/packages/extension/safari/src/main.rs

@@ -1,6 +1,6 @@
+use objc::class;
 use objc::declare::ClassDecl;
 use objc::runtime::Protocol;
-use objc::class;
 
 fn extension_class() {
     let mut ruffle = ClassDecl::new("RuffleWebExtension", class!(NSObject)).unwrap();
@@ -10,15 +10,15 @@ fn extension_class() {
     ruffle.register();
 }
 
-#[link(name="Foundation", kind="framework")]
-extern {
+#[link(name = "Foundation", kind = "framework")]
+extern "C" {
     /// Private function used as the entry point of all app extensions.
-    /// 
+    ///
     /// In Obj-C/Swift apps, a linker flag is used to set this as the entry
     /// point, and thus app extensions are mainless. However, we need a main fn
     /// to register our Obj-C classes, so we have to call this after we're
     /// done.
-    /// 
+    ///
     /// This is almost certainly a "private API" as per App Store guidelines,
     /// but it's part of Foundation (at least after Sierra) and all App
     /// Extensions reference it directly. So it's probably fine to call this.
@@ -29,4 +29,4 @@ fn main() {
     extension_class();
 
     unsafe { NSExtensionMain() }
-}
+}