knotty: use enumerate for task waiting

(Bitbake rev: 89ce8df075ac8c9a5478c86405e6e6b60346a51c)

Signed-off-by: Chris Larson <chris_larson@mentor.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

bitbake/lib/bb/ui/knotty.py

@@ -118,10 +118,8 @@ def init(server, eventHandler):
                 activetasks, failedtasks = helper.getTasks()
                 if activetasks:
                     print("Waiting for %s active tasks to finish:" % len(activetasks))
-                    tasknum = 1
-                    for task in activetasks:
+                    for tasknum, task in enumerate(activetasks):
                         print("%s: %s (pid %s)" % (tasknum, activetasks[task]["title"], task))
-                        tasknum = tasknum + 1
 
             if isinstance(event, logging.LogRecord):
                 if event.levelno is logging.CRITICAL or event.levelno is logging.ERROR: