Few more fixes.

deb/changes.go

@@ -257,7 +257,7 @@ func CollectChangesFiles(locations []string, reporter aptly.ResultReporter) (cha
 				return nil
 			})
 
-			if err != nil {
+			if err2 != nil {
 				reporter.Warning("Unable to process %s: %s", location, err2)
 				failedFiles = append(failedFiles, location)
 				continue

deb/publish.go

@@ -641,6 +641,9 @@ func (p *PublishedRepo) Publish(packagePool aptly.PackagePool, publishedStorageP
 
 				var bufWriter *bufio.Writer
 				bufWriter, err = indexes.ReleaseIndex(component, arch, udeb).BufWriter()
+				if err != nil {
+					return fmt.Errorf("unable to get ReleaseIndex writer: %s", err)
+				}
 
 				err = release.WriteTo(bufWriter, false, true)
 				if err != nil {