[iOS] Crash in -[WebPreviewLoader failed] when running http/tests/multipart/policy-ignore-crash.php
https://bugs.webkit.org/show_bug.cgi?id=170197
<rdar://problem/30314067>

Reviewed by Brady Eidson.

Source/WebCore:

If QuickLook conversion fails, we call ResourceLoader::didFail() with the NSError from
QuickLook, which will call back into PreviewLoader::didFail(). We only care about network
failures in PreviewLoader, not conversion failures, so check if
m_finishedLoadingDataIntoConverter is set before continuing (like we do in
PreviewLoader::didFinishLoading()).

Fixes crash in http/tests/multipart/policy-ignore-crash.php.

* loader/ios/PreviewLoader.mm:
(WebCore::PreviewLoader::didFail):

LayoutTests:

* platform/ios/TestExpectations: Unskipped http/tests/multipart/policy-ignore-crash.php.
* platform/ios/http/tests/multipart/policy-ignore-crash-expected.txt: Added an iOS-specific result.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@214506 268f45cc-cd09-0410-ab3c-d52691b4dbfc
diff --git a/LayoutTests/ChangeLog b/LayoutTests/ChangeLog
index 95e261e..b4c53cd 100644
--- a/LayoutTests/ChangeLog
+++ b/LayoutTests/ChangeLog
@@ -1,3 +1,14 @@
+2017-03-28  Andy Estes  <aestes@apple.com>
+
+        [iOS] Crash in -[WebPreviewLoader failed] when running http/tests/multipart/policy-ignore-crash.php
+        https://bugs.webkit.org/show_bug.cgi?id=170197
+        <rdar://problem/30314067>
+
+        Reviewed by Brady Eidson.
+
+        * platform/ios/TestExpectations: Unskipped http/tests/multipart/policy-ignore-crash.php.
+        * platform/ios/http/tests/multipart/policy-ignore-crash-expected.txt: Added an iOS-specific result.
+
 2017-03-28  Chris Dumez  <cdumez@apple.com>
 
         Animated SVG images are not paused when outside viewport