Address one more warning from MSVC.

Change-Id: Ia5d47bcfeaac002f520b5b6638bedfe28c430d26
Reviewed-on: https://code-review.googlesource.com/7012
Reviewed-by: Paul Wankadia <junyer@google.com>
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1f16dd3..15e6d70 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,7 +24,7 @@
 
 if(WIN32)
   add_definitions(-DUNICODE -D_UNICODE -DSTRICT -DNOMINMAX)
-  add_definitions(-D_CRT_SECURE_NO_WARNINGS)
+  add_definitions(-D_CRT_SECURE_NO_WARNINGS -D_SCL_SECURE_NO_WARNINGS)
 elseif(UNIX)
   add_compile_options(-pthread)
   list(APPEND EXTRA_TARGET_LINK_LIBRARIES -pthread)