HPCC-23136 Fix uninitialized request value causing serialization error

Fix uninitialized value in client side use of WULogFileRequest causing
exception in serialization.

Also fix infinite loop in processing of WULogFileResponse exceptions
in "eclplus dump" command.

Signed-off-by: Anthony Fishbeck <anthony.fishbeck@lexisnexisrisk.com>

ecl/eclplus/DumpHelper.cpp

@@ -21,8 +21,7 @@ static bool processExceptions(const IMultiException* excep)
 {
     if (excep && excep->ordinality())
     {
-        unsigned i = 0;
-        while (i < excep->ordinality())
+        ForEachItemIn(i, *excep)
         {
             StringBuffer msg;
             excep->item(i).errorMessage(msg);
@@ -80,6 +79,7 @@ bool DumpHelper::doit(FILE * fp)
             Owned<IClientWULogFileRequest> req = wuclient->createWUFileRequest();
             req->setWuid(wuid);
             req->setType("XML");
+            req->setErrorMessageFormat(CErrorMessageFormat_XML);
             Owned<IClientWULogFileResponse> resp = wuclient->WUFile(req);
             if(!resp)
             {

esp/services/ws_workunits/ws_workunitsQuerySets.cpp

@@ -124,6 +124,7 @@ void fetchRemoteWorkunit(IClientWsWorkunits *_ws, IEspContext *ctx, const char *
         req->setQuery(query);
     if (wuid && *wuid)
         req->setWuid(wuid);
+    req->setErrorMessageFormat(CErrorMessageFormat_XML);
     req->setType("xml");
     Owned<IClientWULogFileResponse> resp = ws->WUFile(req);
     if (!resp || resp->getExceptions().ordinality() || !resp->getThefile().length())