fix code

src/rustint/core.clj

@@ -2174,7 +2174,8 @@
                 'f64 float?,
                 'String string?,
                 'bool boolean?
-                'usize usize?
+                'usize usize?,
+                'char char?
               ), func (get rtypes rtype)]
       (or (vector? arg) (func arg))
   )