Fix export of NativeStreamImageDecoder

Author: pbrant

src/display/api.js

@@ -1670,7 +1670,7 @@ var InternalRenderTask = (function InternalRenderTaskClosure() {
   return InternalRenderTask;
 })();
 
-var NativeImageStreamDecoder = (function NativeImageStreamDecoderClosure() {
+var NativeImageStreamDecoder = PDFJS.NativeImageStreamDecoder = (function NativeImageStreamDecoderClosure() {
   var result = {
     init: function(module) {
       info('Initializing native image stream decoder message handler');

web/viewer.js

@@ -23,7 +23,6 @@
            OverlayManager, PDFFindController, PDFFindBar, getVisibleElements,
            watchScroll, PDFViewer, PDFRenderingQueue, PresentationModeState,
            RenderingStates, DEFAULT_SCALE, UNKNOWN_SCALE,
-           NativeImageStreamDecoder,
            IGNORE_CURRENT_POSITION_ON_ZOOM: true */
 
 'use strict';
@@ -1477,15 +1476,15 @@ function webViewerInitialized() {
 
     var initImageStreamDecoder = function() {
       console.info('Native image stream decoder module loaded successfully.');
-      NativeImageStreamDecoder.init(moduleEl);
+      PDFJS.NativeImageStreamDecoder.init(moduleEl);
     };
     var disableImageStreamDecoder = function(which) {
       return function() {
         console.error(
           'Image stream decoder has stopped (' + which +
           '). Last error was ' + moduleEl.lastError + '.'
         );
-        NativeImageStreamDecoder.disable();
+        PDFJS.NativeImageStreamDecoder.disable();
       }
     };