HPCC-31895 Fix deserialization and merging of nested stats

Signed-off-by: Shamser Ahmed <[email protected]>

system/jlib/jstats.cpp

@@ -2871,7 +2871,7 @@ void CRuntimeStatisticCollection::deserialize(MemoryBuffer& in)
     in.read(hasNested);
     if (hasNested)
     {
-        ensureNested().deserializeMerge(in);
+        ensureNested().deserialize(in);
     }
 }
 
@@ -2892,7 +2892,7 @@ void CRuntimeStatisticCollection::deserializeMerge(MemoryBuffer& in)
     in.read(hasNested);
     if (hasNested)
     {
-        ensureNested().deserialize(in);
+        ensureNested().deserializeMerge(in);
     }
 }