Silence implicit-fallthrough and unused EPNAME build warnings.

Mark the intentional GET open-to-checksum state transition with
[[fallthrough]] and drop the unused EPNAME from HandleKrb5Auth.

Assisted-by: Cursor:Composer-2.5 CursorAI

Author: apeters1971

src/XrdHttp/XrdHttpReq.cc

@@ -1137,6 +1137,7 @@ int XrdHttpReq::ProcessHTTPReq() {
           // We want to be invoked again after this request is finished
           return 0;
           }
+          [[fallthrough]];
         }
         case 1: // Checksum request
           if (!(fileflags & kXR_isDir) && (!m_want_digest.empty() || !m_want_repr_digest.empty())) {

src/XrdHttp/XrdHttpSecurity.cc

@@ -296,7 +296,6 @@ int XrdHttpProtocol::HandleKrb5Auth()
 {
 #undef  TRACELINK
 #define TRACELINK Link
-  EPNAME("HandleKrb5Auth");
 
   if (!XrdHttpKrb5::IsEnabled())
     return 0;