Merge

diff --cc pdf.js
index bb8ec830591f83469d5bdde0bcccf8395c76410e,3fc03746fb3c02655b4edef3caaf06b1c2bb3d79..e592b3ca5381c83a4abb94eecba64349df449d35
--- 1/pdf.js
--- 2/pdf.js
+++ b/pdf.js
@@@ -1074,11 -1639,12 +1649,11 @@@ var Interpreter = (function() 
                  if (IsCmd(obj)) {
                      var cmd = obj.cmd;
                      var fn = map[cmd];
 -                    if (fn) {
 -                        if (fn.length != args.length)
 -                            error("Invalid number of arguments '" + cmd + "'");
 +                    if (fn)
 +                        // TODO figure out how to type-check vararg functions
                          fn.apply(gfx, args);
 -                    } else
 +                    else
-                         this.error("Unknown command '" + cmd + "'");
+                         error("Unknown command '" + cmd + "'");
                      args.length = 0;
                  } else {
                      if (args.length > 33)