HPCC-8002 Fix a couple of issues pick up by msvc

Most significantly, dedupSuccessess was always being incremented.
Meaning, it would continue to try and dedup in hash distributor
even if not succeeding to reduce

Signed-off-by: Jake Smith <jake.smith@lexisnexis.com>

thorlcr/activities/hashdistrib/thhashdistribslave.cpp

@@ -332,7 +332,7 @@ class CDistributorBase : public CSimpleInterface, implements IHashDistributor, i
                 SpinBlock b(doDedupLock);
                 if (dedupSamples<10)
                 {
-                    if (postCount<preCount*9/10);
+                    if (postCount<preCount*9/10)
                         dedupSuccesses++;
                     dedupSamples++;
                     ActPrintLog(owner.activity, "pre-dedup sample %d : %d unique out of %d, took: %d ms", dedupSamples, postCount, preCount, tookMs);
@@ -742,11 +742,11 @@ public:
         fixedEstSize = meta->querySerializedMeta()->getFixedSize();
         rowManager = activity->queryJob().queryRowManager();
 
-        unsigned defaultAllowSpill = activity->queryJob().getWorkUnitValueBool("allowSpillHashDist", globals->getPropBool("@allowSpillHashDist", true));
+        bool defaultAllowSpill = activity->queryJob().getWorkUnitValueBool("allowSpillHashDist", globals->getPropBool("@allowSpillHashDist", true));
         allowSpill = activity->queryContainer().queryXGMML().getPropBool("hint[@name=\"allow_spill\"]/@value", defaultAllowSpill);
         if (allowSpill)
             ActPrintLog(activity, "Using spilling buffer (will spill if overflows)");
-        writerPoolSize = activity->queryJob().getWorkUnitValueInt("hashDistWritePoolSize", globals->getPropInt("@hashDistWritePoolSize", DEFAULT_WRITEPOOLSIZE));
+        writerPoolSize = (unsigned)activity->queryJob().getWorkUnitValueInt("hashDistWritePoolSize", globals->getPropInt("@hashDistWritePoolSize", DEFAULT_WRITEPOOLSIZE));
         if (writerPoolSize>numnodes)
             writerPoolSize = numnodes; // no point in more
         ActPrintLog(activity, "Writer thread pool size : %d", writerPoolSize);