Minor node/pdf2svg.js fixes.

examples/node/domstubs.js

@@ -16,6 +16,7 @@ var style = {
 
 function xmlEncode(s){
   var i = 0, ch;
+  s = String(s);
   while (i < s.length && (ch = s[i]) !== '&' && ch !== '<' &&
          ch !== '\"' && ch !== '\n' && ch !== '\r' && ch !== '\t') {
     i++;

examples/node/pdf2svg.js

@@ -14,9 +14,10 @@ global.window = global;
 global.navigator = { userAgent: 'node' };
 global.PDFJS = {};
 
+require('./domstubs.js');
+
 PDFJS.workerSrc = true;
 require('../../build/singlefile/build/pdf.combined.js');
-require('./domstubs.js');
 
 // Loading file from file system into typed array
 var pdfPath = process.argv[2] || '../../web/compressed.tracemonkey-pldi-09.pdf';