message: fix otool being called on linux [skip appveyor]
diff: @@ -137,13 +137,17 @@ install:
  - node tools/curl-config.js --static-libs
  - node tools/curl-config.js --prefix
  - node tools/curl-config.js --cflags
  - - echo "OTOOL -D"
  - - otool -D `curl-config --prefix`/lib/libcurl.dylib
  - - echo "OTOOL -D | sed"
  - - otool -D `curl-config --prefix`/lib/libcurl.dylib | sed -n 2p
  + - if [[ $TRAVIS_OS_NAME == "osx" ]]; then
  + echo "OTOOL -D"
  + otool -D `curl-config --prefix`/lib/libcurl.dylib
  + echo "OTOOL -D | sed"
  + otool -D `curl-config --prefix`/lib/libcurl.dylib | sed -n 2p
  + fi
  - npm_config_build_from_source=true npm_config_curl_static_build=true npm_config_verbose=true yarn install --frozen-lockfile
  - - echo "OTOOL module"
  - - otool -D ./lib/binding/node_libcurl.node
  + - if [[ $TRAVIS_OS_NAME == "osx" ]]; then
  + echo "OTOOL module"
  + otool -D ./lib/binding/node_libcurl.node
  + fi
  - ldd lib/binding/*/*/*node
  - yarn test
  before_script:
  