Merge branch 'claude/implement-5891-deff16' into claude/from-json-arith-array

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

include/nlohmann/detail/input/json_sax.hpp

@@ -349,7 +349,7 @@ class json_sax_dom_error_state
         return false;
     }
 
-    constexpr bool is_errored() const
+    bool is_errored() const
     {
         return errored;
     }

include/nlohmann/detail/input/parser.hpp

@@ -168,7 +168,7 @@ class parser
             return finish_input(*sax, strict);
         }
 
-        return result;
+        return false;
     }
 
   private: