fix(pusher): dont increment missing tags (#2081)

pkg/pusher/pusher.go

@@ -206,7 +206,10 @@ LOOP:
 					err = fmt.Errorf("pusher: set sync: %w", err)
 					return
 				}
-
+				if ch.TagID() > 0 {
+					// for individual chunks uploaded using the
+					// /chunks api endpoint the tag will be missing
+					// by default, unless the api consumer specifies one
 					t, err = s.tag.Get(ch.TagID())
 					if err == nil && t != nil {
 						err = t.Inc(tags.StateSynced)
@@ -222,6 +225,8 @@ LOOP:
 							}
 						}
 					}
+				}
+
 			}(ctx, ch)
 		case <-timer.C:
 			// initially timer is set to go off as well as every time we hit the end of push index