Test for direct, rather than resolved nulls in parser

Just because we know an indirect reference is null, doesn't mean we
shouldn't keep it indirect.

1 files changed, 5 insertions, 6 deletions

diff --git a/include/qpdf/QPDFObjectHandle.hh b/include/qpdf/QPDFObjectHandle.hh
index 0569ec5d..58708f72 100644
--- a/include/qpdf/QPDFObjectHandle.hh
+++ b/include/qpdf/QPDFObjectHandle.hh
@@ -281,13 +281,12 @@ class QPDFObjectHandle
     QPDF_DLL
     bool isReserved();
 
-    // True for objects that are direct nulls or have previously been
-    // resolved to be nulls. Does not attempt to resolve objects. This
-    // is intended for internal use, but it can be used as an
-    // efficient way to check for nulls if you don't mind unresolved
-    // indirect nulls being false negatives.
+    // True for objects that are direct nulls. Does not attempt to
+    // resolve objects. This is intended for internal use, but it can
+    // be used as an efficient way to check for nulls that are not
+    // indirect objects.
     QPDF_DLL
-    bool isResolvedNull() const;
+    bool isDirectNull() const;
 
     // This returns true in addition to the query for the specific
     // type for indirect objects.