From 5e9b606e7b812152d7eee3a2d400ab5b6f0f856f Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Tue, 16 Apr 2019 15:19:19 +0200
Subject: [PATCH] [Firefox] Avoid displaying the indeterminate loadingBar when
 `disableStream=true` is set (PR 10714 follow-up)

While PR 10714 did address the `disableRange=true` case, it also managed to "break" the `disableStream=true` case instead since the indeterminate loadingBar is now displayed when it shouldn't; sorry about that!
The solution is simple enough though, don't attempt to fallback to `_fullRequestReader.onProgress` when handling "incomplete" loading information.
---
 src/display/transport_stream.js | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/src/display/transport_stream.js b/src/display/transport_stream.js
index a1e2f91cd..32d916307 100644
--- a/src/display/transport_stream.js
+++ b/src/display/transport_stream.js
@@ -81,18 +81,18 @@ var PDFDataTransportStream = (function PDFDataTransportStreamClosure() {
     },
 
     _onProgress: function PDFDataTransportStream_onDataProgress(evt) {
-       if (evt.total === undefined && this._rangeReaders.length > 0) {
-         // Reporting to first range reader.
-         var firstReader = this._rangeReaders[0];
-         if (firstReader.onProgress) {
-           firstReader.onProgress({ loaded: evt.loaded, });
-           return;
-         }
-       }
-       let fullReader = this._fullRequestReader;
-       if (fullReader && fullReader.onProgress) {
-         fullReader.onProgress({ loaded: evt.loaded, total: evt.total, });
-       }
+      if (evt.total === undefined) {
+        // Reporting to first range reader, if it exists.
+        let firstReader = this._rangeReaders[0];
+        if (firstReader && firstReader.onProgress) {
+          firstReader.onProgress({ loaded: evt.loaded, });
+        }
+      } else {
+        let fullReader = this._fullRequestReader;
+        if (fullReader && fullReader.onProgress) {
+          fullReader.onProgress({ loaded: evt.loaded, total: evt.total, });
+        }
+      }
     },
 
     _onProgressiveDone() {