QtTestLib: Use Q_NULLPTR instead of 0 in all public headers

This is in preparation of adding -Wzero-as-null-pointer-constant (or similar)
to the headers check.

Since QtTestLib has a lot of templates and macros, not all uses of 0 as nullptr
might have been detected by the headersclean check.

Task-number: QTBUG-45291
Change-Id: I21e9d8822e3a708010938e8d5ef2fd42ae6c8c68
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/testlib/qsignalspy.h b/src/testlib/qsignalspy.h
index cfde89aec8..1751220059 100644
--- a/src/testlib/qsignalspy.h
+++ b/src/testlib/qsignalspy.h
@@ -82,7 +82,7 @@ public:
         }
 
         if (!QMetaObject::connect(obj, sigIndex, this, memberOffset,
-                    Qt::DirectConnection, 0)) {
+                    Qt::DirectConnection, Q_NULLPTR)) {
             qWarning("QSignalSpy: QMetaObject::connect returned false. Unable to connect.");
             return;
         }