Merge pull request #1390 from sangshuduo/fix-src-darwin-os-h-to-reflect-correct-os

Fix src/os/darwin/inc/os.h to reflect correct os

src/os/darwin/inc/os.h

@@ -13,8 +13,8 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef TDENGINE_PLATFORM_LINUX_H
-#define TDENGINE_PLATFORM_LINUX_H
+#ifndef TDENGINE_PLATFORM_DARWIN_H
+#define TDENGINE_PLATFORM_DARWIN_H
 
 #ifdef __cplusplus
 extern "C" {