Bug 1257203 - Fix toolkit.asyncshutdown.timeout.crash. r=Yoric

--HG--
extra : rebase_source : d8ed27e45bec209312e022ddeb9bd6543e345c7b

modules/libpref/init/all.js

@@ -852,7 +852,7 @@ pref("toolkit.identity.enabled", false);
 pref("toolkit.identity.debug", false);
 
 // AsyncShutdown delay before crashing in case of shutdown freeze
-pref("toolkit.asyncshutdown.timeout.crash", 60000);
+pref("toolkit.asyncshutdown.crash_timeout", 60000);
 // Extra logging for AsyncShutdown barriers and phases
 pref("toolkit.asyncshutdown.log", false);