[HUDSON-6667] wait indefinitely for quiet down to complete,

instead of waiting just 10 seconds and proceeding with restart (not so safe!)


git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@31633 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/model/Hudson.java

@@ -2961,7 +2961,7 @@ public final class Hudson extends Node implements ItemGroup<TopLevelItem>, Stapl
                     SecurityContextHolder.getContext().setAuthentication(ACL.SYSTEM);
 
                     // Wait 'til we have no active executors.
-                    doQuietDown(true, 5000);
+                    doQuietDown(true, 0);
 
                     // Make sure isQuietingDown is still true.
                     if (isQuietingDown) {