Fix - show non-zero fEntries for TH2/TH3 #320

If not set - use from counted statistic

Author: linev

modules/hist/TH3Painter.mjs

@@ -131,7 +131,7 @@ class TH3Painter extends THistPainter {
 
       res.integral = stat_sum0;
 
-      if (histo.fEntries > 1)
+      if (histo.fEntries > 0)
          res.entries = histo.fEntries;
 
       res.eff_entries = stat_sumw2 ? stat_sum0*stat_sum0/stat_sumw2 : Math.abs(stat_sum0);

modules/hist2d/TH2Painter.mjs

@@ -1056,7 +1056,7 @@ class TH2Painter extends THistPainter {
          res.wmax = 0;
       res.integral = stat_sum0;
 
-      if (histo.fEntries > 1)
+      if (histo.fEntries > 0)
          res.entries = histo.fEntries;
 
       res.eff_entries = stat_sumw2 ? stat_sum0*stat_sum0/stat_sumw2 : Math.abs(stat_sum0);