Handle parse error stream data (fixes #1123)

A parse error in stream data in which stream data contained a nested
object would cause a crash because qpdf was not correctly updating its
internal state. Rework the QPDF json reactor to not be sensitive to
parse errors in this way.

1 files changed, 2 insertions, 0 deletions

diff --git a/qpdf/qtest/qpdf-json.test b/qpdf/qtest/qpdf-json.test
index 0ea126ec..2f7bcd86 100644
--- a/qpdf/qtest/qpdf-json.test
+++ b/qpdf/qtest/qpdf-json.test
@@ -37,6 +37,8 @@ my @badfiles = (
     'obj-key-errors',
     'bad-data',
     'bad-datafile',
+    'bad-data2',
+    'bad-datafile2',
     );
 
 $n_tests += scalar(@badfiles);