avoid math on buildNumber value when possible, in case it isn't numeric

(e.g. batch-task plugin)


git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@30303 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/resources/hudson/widgets/BuildHistoryWidget/entries.jelly

@@ -35,7 +35,9 @@ THE SOFTWARE.
         <td nowrap="nowrap">
           <img width="16" height="16" src="${imagesURL}/16x16/grey.gif" alt="${%pending}"/>
           <st:nbsp/>
-          #${it.owner.nextBuildNumber+queuedItems.size()-i-1}
+          <!-- Don't use math unless needed, in case nextBuildNumber is not numeric -->
+          #${queuedItems.size()==1 ? it.owner.nextBuildNumber
+             : it.owner.nextBuildNumber+queuedItems.size()-i-1}
         </td>
         <td style="white-space:normal;">
           <div style="float:right">
@@ -62,4 +64,4 @@ THE SOFTWARE.
   </j:if>
 
   <st:include page="/hudson/widgets/HistoryWidget/entries.jelly" />
-</j:jelly>
\ No newline at end of file
+</j:jelly>