Re #7192. Adding more progress bar updates.

The bar now updates after the event list is created in the thread
as well as at the start of creating the event list.

Also moved some delete statements earlier to when the data is no
longer needed.

Code/Mantid/Framework/DataHandling/src/LoadEventNexus.cpp

@@ -355,6 +355,11 @@ class ProcessBankData : public Task
       }
     } //(for each event)
 
+    // Free Memory
+    delete [] event_id;
+    delete [] event_time_of_flight;
+    delete event_index_ptr;
+
     //------------ Compress Events (or set sort order) ------------------
     // Do it on all the detector IDs we touched
     for (detid_t pixID = 0; pixID <= alg->eventid_max; pixID++)
@@ -375,7 +380,7 @@ class ProcessBankData : public Task
         }
       }
     }
-
+    prog->report(entry_name + ": filled events");
 
     alg->getLogger().debug() << entry_name << (pulsetimesincreasing ? " had " : " DID NOT have ") <<
         "monotonically increasing pulse times" << std::endl;
@@ -389,10 +394,7 @@ class ProcessBankData : public Task
       alg->bad_tofs += badTofs;
     }
 
-    // Free Memory
-    delete [] event_id;
-    delete [] event_time_of_flight;
-    delete event_index_ptr;
+
     // For Linux with tcmalloc, make sure memory goes back;
     // but don't call if more than 15% of memory is still available, since that slows down the loading.
     MemoryManager::Instance().releaseFreeMemoryIfAbove(0.85);
@@ -1560,7 +1562,7 @@ void LoadEventNexus::loadEvents(API::Progress * const prog, const bool monitors)
   shortest_tof = static_cast<double>(std::numeric_limits<uint32_t>::max()) * 0.1;
   longest_tof = 0.;
 
-  Progress * prog2 = new Progress(this,0.3,1.0, bankNames.size()*3);
+  Progress * prog2 = new Progress(this,0.3,1.0, bankNames.size()*4);
 
   // Make the thread pool
   ThreadScheduler * scheduler = new ThreadSchedulerMutexes();