[master] ea5917c60 fix an oversight from the pool_task field to array change

[Nils Goroll]

commit ea5917c601b97f64c31f2595bf74a5f1ef3e18fd
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Sat Apr 4 15:05:42 2020 +0200

    fix an oversight from the pool_task field to array change
    
    spotted by flexelint
    
    Ref a67a9d5606210245dd0c51966698dcd07206c91e

diff --git a/bin/varnishd/cache/cache_wrk.c b/bin/varnishd/cache/cache_wrk.c
index 54e962cd7..13a7cb8ac 100644
--- a/bin/varnishd/cache/cache_wrk.c
+++ b/bin/varnishd/cache/cache_wrk.c
@@ -409,7 +409,7 @@ Pool_Work_Thread(struct pool *pp, struct worker *wrk)
 			break;
 
 		do {
-			memset(&wrk->task, 0, sizeof wrk->task);
+			memset(wrk->task, 0, sizeof wrk->task);
 			assert(wrk->pool == pp);
 			tp->func(wrk, tp->priv);
 			if (DO_DEBUG(DBG_VCLREL) && wrk->vcl != NULL)