wrong variable name

Author: albestro

.travis.yml

@@ -109,14 +109,14 @@ matrix:
 before_script:
   - mkdir -p /tmp/cmake.root
   - |
-    if [ $TRAVIS_OS_SUFFIX = 'linux' ]; then
+    if [ $TRAVIS_OS_NAME = 'linux' ]; then
       CMAKE_PKG_SUFFIX="linux-x86_64"
     else
       CMAKE_PKG_SUFFIX="macos10.10-universal"
     fi
   - wget -qO- "https://cmake.org/files/v3.20/cmake-3.20.5-$CMAKE_PKG_SUFFIX.tar.gz" | tar --strip-components=1 -xz -C /tmp/cmake.root
   - |
-    if [ $TRAVIS_OS_SUFFIX = 'linux' ]; then
+    if [ $TRAVIS_OS_NAME = 'linux' ]; then
       CMAKE_BIN_DIR="bin"
     else
       CMAKE_BIN_DIR="CMake.app/Contents/bin"