capture: Check for valid wtap when capture.show_info

Changing profile during capture may change the capture_opts->show_info
setting. Always init cap_session->wtap and check if valid before doing
capture_info_new_packets(). Always close dialog and cap_session->wtap
in capture_input_closed().

This will not bring up the Capture Information dialog when switching
to a profile having this enabled.

Fixes #17622

1 files changed, 1 insertions, 0 deletions

diff --git a/ui/qt/capture_info_dialog.cpp b/ui/qt/capture_info_dialog.cpp
index fdba3a870f..8c4ef8a8de 100644
--- a/ui/qt/capture_info_dialog.cpp
+++ b/ui/qt/capture_info_dialog.cpp
@@ -78,6 +78,7 @@ capture_info    *cinfo)
 {
     CaptureInfoDialog *ci_dlg = qobject_cast<CaptureInfoDialog *>((QObject *)cinfo->ui);
     if (!ci_dlg) return;
+    cinfo->ui = NULL;
     delete ci_dlg;
 }