Handle pages with no /Contents from getPageContents()

The spec allows /Contents to be omitted for pages that are blank, but
QPDFObjectHandle::getPageContents() was throwing an exception in this
case.

1 files changed, 1 insertions, 1 deletions

diff --git a/libqpdf/QPDFObjectHandle.cc b/libqpdf/QPDFObjectHandle.cc
index ef92e3ac..eec4fae3 100644
--- a/libqpdf/QPDFObjectHandle.cc
+++ b/libqpdf/QPDFObjectHandle.cc
@@ -633,7 +633,7 @@ QPDFObjectHandle::getPageContents()
     {
 	result.push_back(contents);
     }
-    else
+    else if (! contents.isNull())
     {
 	throw std::runtime_error("unknown object type inspecting /Contents "
 				 "key in page dictionary");