Fix defect crash.

Author: cheatfate

beacon_chain/consensus_object_pools/blob_quarantine.nim

@@ -766,8 +766,7 @@ func getMissingSidecarIndices*(
     blockRoot: Eth2Digest
 ): seq[ColumnIndex] =
   var res: seq[ColumnIndex]
-  let map = quarantine.getMissingColumnsMap(blockRoot)
-  for item in map:
+  for item in quarantine.getMissingColumnsMap(blockRoot):
     res.add(item)
   res
 

beacon_chain/sync/sync_queue.nim

@@ -283,7 +283,7 @@ func getShortMap*[T](
 ): string =
   let
     alphabet =
-      "123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ+/#"
+      "123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ+/#-"
     unknown = "…"
 
   var