Merge pull request #66 from omasanori/roundtrip

Split roundtrip_test and leakcheck.
diff --git a/.travis.yml b/.travis.yml
index 5de5632..25c3ec1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -30,5 +30,9 @@
      if [ ${TRAVIS_OS_NAME:-'linux'} = 'linux' ]
      then
          make roundtrip_test
+     fi
+ - |
+     if [ ${TRAVIS_OS_NAME:-'linux'} = 'linux' ]
+     then
          make leakcheck
      fi