fix yml syntax

Joshua Li · Joshua Li · commit 961b93ceeafd · 2018-09-01T23:23:01.000-04:00
diff --git a/.travis.yml b/.travis.yml
@@ -21,7 +21,7 @@ before_install:
         brew update ;
         brew install upx ;;
       *) ;;
-  esac
+    esac
 
 script:
   - cargo test --verbose
