[Testing] Review feedback

Author: davezarzycki

stdlib/tools/swift-reflection-test/swift-reflection-test.c

@@ -36,6 +36,10 @@
 
 #if defined(__clang__) || defined(__GNUC__)
 #define NORETURN __attribute__((noreturn))
+#elif defined(_MSC_VER)
+#define NORETURN __declspec(noreturn)
+#else
+#define NORETURN
 #endif
 
 typedef struct PipeMemoryReader {