Fix indentations.

Signed-off-by: OGINO Masanori <masanori.ogino@gmail.com>
diff --git a/.travis.yml b/.travis.yml
index 5ffc63b..25c3ec1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -29,10 +29,10 @@
  - |
      if [ ${TRAVIS_OS_NAME:-'linux'} = 'linux' ]
      then
-        make roundtrip_test
+         make roundtrip_test
      fi
  - |
      if [ ${TRAVIS_OS_NAME:-'linux'} = 'linux' ]
      then
-        make leakcheck
+         make leakcheck
      fi