Auto merge of #11329 - c-rhodes:11320, r=jdm

Report use statements that use {} with only one entry

Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data:
- [X ] `./mach build -d` does not report any errors
- [X ] `./mach test-tidy --faster` does not report any errors
- [X ] These changes fix #11320  (github issue number if applicable).

Either:
- [X] There are tests for these changes OR
- [ ] These changes do not require tests because _____

Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process.

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components/script/dom/bindings/utils.rs

@@ -16,6 +16,7 @@ use dom::bindings::trace::trace_object;
 use dom::browsingcontext;
 use heapsize::HeapSizeOf;
 use js;
+use js::JS_CALLEE;
 use js::glue::{CallJitGetterOp, CallJitMethodOp, CallJitSetterOp, IsWrapper};
 use js::glue::{GetCrossCompartmentWrapper, WrapperNew};
 use js::glue::{RUST_FUNCTION_VALUE_TO_JITINFO, RUST_JSID_IS_INT, RUST_JSID_IS_STRING};
@@ -32,7 +33,6 @@ use js::jsapi::{JS_SetReservedSlot, JS_StringHasLatin1Chars, MutableHandleValue,
 use js::jsapi::{OnNewGlobalHookOption, RootedObject, RootedValue};
 use js::jsval::{JSVal, ObjectValue, PrivateValue, UndefinedValue};
 use js::rust::{GCMethods, ToString};
-use js::{JS_CALLEE};
 use libc;
 use std::default::Default;
 use std::ffi::CString;