Run clang-tidy with modernize nullptr

Also add two enum values in the qt5 frontend to representate no flags
Also mark glib/gtk/cairo system includes so that gcc doesn't report the issues in those headers

1 files changed, 1 insertions, 1 deletions

diff --git a/poppler/Movie.cc b/poppler/Movie.cc
index fa709b3b..3cc922ff 100644
--- a/poppler/Movie.cc
+++ b/poppler/Movie.cc
@@ -173,7 +173,7 @@ void MovieActivationParameters::parseMovieActivation(Object* aDict) {
 }
 
 void Movie::parseMovie (Object *movieDict) {
-  fileName = NULL;
+  fileName = nullptr;
   rotationAngle = 0;
   width = -1;
   height = -1;