stats: fix concurrency bug introduced in v2.5.0. fix #405

Author: shenwei356

CHANGELOG.md

@@ -1,5 +1,7 @@
 - [SeqKit v2.5.1](https://github.com/shenwei356/seqkit/releases/tag/v2.5.1) - 2023-07-16
 [![Github Releases (by Release)](https://img.shields.io/github/downloads/shenwei356/seqkit/v2.5.1/total.svg)](https://github.com/shenwei356/seqkit/releases/tag/v2.5.1)
+    - `seqkit stats`:
+        - fix concurrency bug introduced in v2.5.0. [#405](https://github.com/shenwei356/seqkit/issues/405)
     - `seqkit subseq`:
         - sequence/chromosome IDs are case-sensitive now. [#400)(https://github.com/shenwei356/seqkit/issues/400)
 - [SeqKit v2.5.0](https://github.com/shenwei356/seqkit/releases/tag/v2.5.0) - 2023-07-16

seqkit/cmd/stat.go

@@ -261,9 +261,9 @@ Tips:
 				buf[info.id] = info // save for later check
 
 				// check bufferd results
-				if info1, ok := buf[id]; ok {
+				if info, ok := buf[id]; ok {
 					if !tabular {
-						statInfos = append(statInfos, info1)
+						statInfos = append(statInfos, info)
 					} else {
 						fmt.Fprintf(outfh, "%s\t%s\t%s\t%d\t%d\t%d\t%.1f\t%d",
 							info.file,
@@ -294,7 +294,7 @@ Tips:
 						outfh.Flush()
 					}
 
-					delete(buf, info1.id)
+					delete(buf, info.id)
 					id++
 				}
 			}