Fix read_all conflicting span

deku-derive/src/lib.rs

@@ -603,7 +603,7 @@ impl FieldData {
                 || (data.bits_read.is_some() || data.bytes_read.is_some()))
         {
             return Err(cerror(
-                data.bits.span(),
+                data.read_all.span(),
                 "conflicting: `read_all` cannot be used with `until`, `count`, `bits_read`, or `bytes_read`",
             ));
         }