chore: simplify JsString::as_str

Author: CrazyboyQCD

core/string/src/lib.rs

@@ -341,26 +341,20 @@ impl JsString {
                 //   which means it is safe to read the `refcount` as `read_only` here.
                 unsafe {
                     let h = h.as_ptr();
-                    if (*h).refcount.read_only == 0 {
+                    let tagged_len = (*h).tagged_len;
+                    let len = tagged_len.len();
+                    let is_latin1 = tagged_len.is_latin1();
+                    let ptr = if (*h).refcount.read_only == 0 {
                         let h = h.cast::<StaticJsString>();
-                        return if (*h).tagged_len.is_latin1() {
-                            JsStr::latin1(std::slice::from_raw_parts(
-                                (*h).ptr,
-                                (*h).tagged_len.len(),
-                            ))
+                        (*h).ptr
                         } else {
-                            JsStr::utf16(std::slice::from_raw_parts(
-                                (*h).ptr.cast(),
-                                (*h).tagged_len.len(),
-                            ))
+                        (&raw const (*h).data).cast::<u8>()
                         };
-                    }
 
-                    let len = (*h).len();
-                    if (*h).is_latin1() {
-                        JsStr::latin1(std::slice::from_raw_parts(addr_of!((*h).data).cast(), len))
+                    if is_latin1 {
+                        JsStr::latin1(std::slice::from_raw_parts(ptr, len))
                     } else {
-                        JsStr::utf16(std::slice::from_raw_parts(addr_of!((*h).data).cast(), len))
+                        JsStr::utf16(std::slice::from_raw_parts(ptr.cast::<u16>(), len))
                     }
                 }
             }