Bug 2002687 - Don't retry transaction during shutdown, r=necko-reviewers,valentin

Differential Revision: https://phabricator.services.mozilla.com/D274274

UltraBlame original commit: a7e5bfa46961f26d8558a14399c5772f6d119c90

Author: marco-c

netwerk/protocol/http/nsHttpTransaction.cpp

@@ -12086,6 +12086,34 @@ return
 NS_ERROR_NET_RESET
 ;
 }
+/
+/
+Let
+'
+s
+not
+restart
+during
+shutdown
+.
+if
+(
+AppShutdown
+:
+:
+IsInOrBeyond
+(
+ShutdownPhase
+:
+:
+AppShutdownConfirmed
+)
+)
+{
+return
+NS_ERROR_ILLEGAL_DURING_SHUTDOWN
+;
+}
 LOG
 (
 (