LibJS: Convert length_of_array_like to ThrowCompletionOr

Author: https://github.com/IdanHo
Commit: e90e4ac1e2
Pull-request: https://github.com/SerenityOS/serenity/pull/10169
Reviewed-by: https://github.com/linusg ✅

Userland/Libraries/LibJS/Runtime/StringConstructor.cpp

@@ -86,7 +86,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringConstructor::raw)
     if (vm.exception())
         return {};
 
-    auto literal_segments = length_of_array_like(global_object, *raw);
+    auto literal_segments = TRY_OR_DISCARD(length_of_array_like(global_object, *raw));
     if (vm.exception())
         return {};