refactor by review

Author: Luohaothu

routers/api/packages/conda/conda.go

@@ -140,11 +140,6 @@ func EnumeratePackages(ctx *context.Context) {
 
 		versionMetadata := pd.Metadata.(*conda_module.VersionMetadata)
 
-		deps := fileMetadata.Dependencies
-		if deps == nil {
-			deps = []string{}
-		}
-
 		pi := &PackageInfo{
 			Name:          pd.PackageProperties.GetByName(conda_module.PropertyName),
 			Version:       pd.Version.Version,
@@ -153,7 +148,7 @@ func EnumeratePackages(ctx *context.Context) {
 			Timestamp:     fileMetadata.Timestamp,
 			Build:         fileMetadata.Build,
 			BuildNumber:   fileMetadata.BuildNumber,
-			Dependencies:  deps,
+			Dependencies:  util.SliceNilAsEmpty(fileMetadata.Dependencies),
 			License:       versionMetadata.License,
 			LicenseFamily: versionMetadata.LicenseFamily,
 			HashMD5:       pfd.Blob.HashMD5,