Fix creation of the TOC tree for dvi files

The old code assumed the number of children would be
"-NUMBER "
while this file has
"-NUMBER/"
so what we do now is looping after the - until we find a non digit
All this code would better be done using a regexp and not that many section calls
but i did not want to touch it more than needed
BUGS: 283447
FIXED-IN: 4.7.3
(cherry picked from commit 83df127ac0)

generators/dvi/dviRenderer_prescan.cpp

@@ -361,11 +361,18 @@ void dviRenderer::prescan_ParsePSSpecial(const QString& cp)
         anchorList[anchorName] = Anchor(current_page+1, l);
       }
       // The PostScript code defines a bookmark
-      if (cp.contains("/Dest") && cp.contains("/Title"))
+      if (cp.contains("/Dest") && cp.contains("/Title")) {
+        const QString childrenNumberAndMoreStuff = cp.section('-', 1, 1); // Contains from the - symbol to the end of cp, effectively containing the number of children and some stuff after it
+        int indexOfFirstNonDigit = 0;
+        foreach(const QChar &c, childrenNumberAndMoreStuff) {
+          if (c.isDigit()) ++indexOfFirstNonDigit;
+          else break;
+        }
         prebookmarks.append(PreBookmark(PDFencodingToQString(cp.section('(', 2, 2).section(')', 0, 0)),
                                         cp.section('(', 1, 1).section(')', 0, 0),
-                                        cp.section('-', 1, 1).section(' ', 0, 0).toUInt()
+                                        childrenNumberAndMoreStuff.left(indexOfFirstNonDigit).toUInt()
                                         ));
+      }
       return;
     }
   }