Python3: Fix mixed tabs/spaces in ntpdig

ntpclients/ntpdig

@@ -388,15 +388,15 @@ if __name__ == '__main__':
             print("rec-org t21: %f  xmt-dst t34: %f" % (pkt.t2() - pkt.t1(), pkt.t3() - pkt.t4()))
         adjusted = step and (not slew or (slew and (abs(offset) > steplimit)))
         report(pkt, json)
-	# If we can step but we cannot slew, then step.
-	# If we can step or slew and |offset| > steplimit, then step.
+        # If we can step but we cannot slew, then step.
+        # If we can step or slew and |offset| > steplimit, then step.
         rc = True
         offset = pkt.adjust()
         ntp.ntpc.setprogname("ntpdig")
         if adjusted:
-		rc = ntp.ntpc.step_systime(offset)
-	elif slew:
-		rc = ntp.ntpc.adj_systime(offset)
+            rc = ntp.ntpc.step_systime(offset)
+        elif slew:
+            rc = ntp.ntpc.adj_systime(offset)
         if rc:
             raise SystemExit(0)
         else: