build: Fix C4005 "macro redefinition" MSVC warnings in examples

examples/CMakeLists.txt

@@ -2,9 +2,6 @@ add_library(example INTERFACE)
 target_include_directories(example INTERFACE
   ${PROJECT_SOURCE_DIR}/include
 )
-target_compile_options(example INTERFACE
-  $<$<C_COMPILER_ID:MSVC>:/wd4005>
-)
 target_link_libraries(example INTERFACE
   $<$<PLATFORM_ID:Windows>:bcrypt>
 )

examples/examples_util.h

@@ -17,7 +17,13 @@
  */
 
 #if defined(_WIN32)
+/*
+ * The defined WIN32_NO_STATUS macro disables return code definitions in
+ * windows.h, which avoids "macro redefinition" MSVC warnings in ntstatus.h.
+ */
+#define WIN32_NO_STATUS
 #include <windows.h>
+#undef WIN32_NO_STATUS
 #include <ntstatus.h>
 #include <bcrypt.h>
 #elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)