v0.0.263 re-add checksum guard to id-generate

bfcodegen/id-generate.go

@@ -67,7 +67,7 @@ func GenerateIDSpecs(sourceDir string, destFile string) error {
 		fmt.Printf("[IDGenerate] Checksum has changed ( %s -> %s ), will generate new file\n\n", oldChecksum, newChecksum)
 	} else {
 		fmt.Printf("[IDGenerate] Checksum unchanged ( %s ), nothing to do\n", oldChecksum)
-		//TODO return nil
+		return nil
 	}
 
 	allIDs := make([]IDDef, 0)