gofmt soong

Test: Presubmits
Change-Id: Ia76c35ba51685eca29df51738000eacd3f43ce20
diff --git a/ui/build/config.go b/ui/build/config.go
index 264d83e..5925b28 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -1348,7 +1348,7 @@
 }
 
 func (c *configImpl) rbeDownloadTmpDir() string {
-    for _, f := range []string{"RBE_download_tmp_dir", "FLAG_download_tmp_dir"} {
+	for _, f := range []string{"RBE_download_tmp_dir", "FLAG_download_tmp_dir"} {
 		if v, ok := c.environ.Get(f); ok {
 			return v
 		}