Use no-switch-default on clang

clang-18 improves this check so that we can actually use it.  Enable it
and fix all violations.

Change-Id: Ibe4ce19c423d447a4cbe593d1abba948362426af
Signed-off-by: Ed Tanous <ed@tanous.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/multipart_parser.hpp b/include/multipart_parser.hpp
index 9adf564cc7..924ee8d5cb 100644
--- a/include/multipart_parser.hpp
+++ b/include/multipart_parser.hpp
@@ -209,6 +209,8 @@ class MultipartParser
                 }
                 case State::END:
                     break;
+                default:
+                    return ParserError::ERROR_UNEXPECTED_END_OF_INPUT;
             }
         }