Merge pull request #10296 from Icinga/comment-loading-nullptr-deference

Address comment loading where host reference is not found gracefully

Author: yhabteab

AUTHORS

@@ -296,6 +296,7 @@ Winfried Angele <winfried.angele@gmail.com>
 Wolfgang Nieder <wnd@gmx.net>
 XnS <git@xns.be>
 Yannick Charton <tontonitch-pro@yahoo.fr>
+Yannick Martin <yannick.martin@ovhcloud.com>
 Yohan Jarosz <yohanjarosz@yahoo.fr>
 Yonas Habteab <yonas.habteab@icinga.com>
 Zachary McGibbon <zachary.mcgibbon@gmail.com>

lib/icinga/comment.cpp

@@ -65,7 +65,7 @@ void Comment::OnAllConfigLoaded()
 
 	Host::Ptr host = Host::GetByName(GetHostName());
 
-	if (GetServiceName().IsEmpty())
+	if (GetServiceName().IsEmpty() || ! host)
 		m_Checkable = host;
 	else
 		m_Checkable = host->GetServiceByShortName(GetServiceName());