Fix - prevent error when TPaveText includes TLine or TBox in list of

lines

Author: linev

changes.md

@@ -5,6 +5,7 @@
 2. Fix in unzomming of log scale - https://root-forum.cern.ch/t/25889
 3. Fix in TMultiGraph painting - ignore not-supported options https://root-forum.cern.ch/t/25888
 4. Fix - correctly use fGridColor from TStyle 
+5. Fix - prevent error when TPaveText includes TLine or TBox in list of lines
 
 
 ## Changes in 5.2.2

scripts/JSRootCore.js

@@ -89,7 +89,7 @@
    }
 } (function(JSROOT) {
 
-   JSROOT.version = "5.2.x 14/08/2017";
+   JSROOT.version = "5.2.x 21/08/2017";
 
    JSROOT.source_dir = "";
    JSROOT.source_min = false;

scripts/JSRootPainter.js

@@ -4016,15 +4016,18 @@
       // adjust font size
       for (var j = 0; j < nlines; ++j) {
          var line = pt.fLines.arr[j].fTitle;
+         if (line === undefined) continue;
          lines.push(line);
          if (j>0) maxlen = Math.max(maxlen, line.length);
-         if (!this.IsStats() || (j == 0) || (line.indexOf('|') < 0)) continue;
-         if (first_stat === 0) first_stat = j;
+         if (!this.IsStats() || (lines.length == 1) || (line.indexOf('|') < 0)) continue;
+         if (first_stat === 0) first_stat = lines.length-1;
          var parts = line.split("|");
          if (parts.length > num_cols)
             num_cols = parts.length;
       }
 
+      nlines = lines.length;
+
       if ((nlines===1) && !this.IsStats() &&
           (lines[0].indexOf("#splitline{")===0) && (lines[0][lines[0].length-1]=="}")) {
             var pos = lines[0].indexOf("}{");