[JENKINS-16417]

Follow up fix as pointed out by Daniel Beck.

core/src/main/resources/hudson/model/Run/logKeep.jelly

@@ -29,10 +29,10 @@ THE SOFTWARE.
 <j:jelly xmlns:j="jelly:core" xmlns:st="jelly:stapler" xmlns:d="jelly:define" xmlns:l="/lib/layout" xmlns:t="/lib/hudson" xmlns:f="/lib/form" xmlns:i="jelly:fmt">
   <j:if test="${it.parent.logRotator!=null and it.canToggleLogKeep()}">
     <form method="get" action="toggleLogKeep" style="margin-top:1em">
-      <j:if test="${it.keepLog}">
+      <j:if test="${it.keepLog and h.hasPermission(it,it.DELETE)}">
         <f:submit value="${%Don't keep this build forever}"  />
       </j:if>
-      <j:if test="${!it.keepLog}">
+      <j:if test="${!it.keepLog and h.hasPermission(it,it.UPDATE)}">
         <f:submit value="${%Keep this build forever}"  />
       </j:if>
     </form>