Fix some #endif comments

Signed-off-by: Eric Biggers <ebiggers@google.com>
diff --git a/common/fsverity_uapi.h b/common/fsverity_uapi.h
index be1d3f6..a739c9a 100644
--- a/common/fsverity_uapi.h
+++ b/common/fsverity_uapi.h
@@ -13,7 +13,7 @@
 #ifndef _WIN32
 #include <linux/ioctl.h>
 #include <linux/types.h>
-#endif /* _WIN32 */
+#endif /* !_WIN32 */
 
 #define FS_VERITY_HASH_ALG_SHA256	1
 #define FS_VERITY_HASH_ALG_SHA512	2
diff --git a/programs/fsverity.c b/programs/fsverity.c
index f68e034..b911b2e 100644
--- a/programs/fsverity.c
+++ b/programs/fsverity.c
@@ -44,7 +44,7 @@
 "Display the fs-verity digest of the given verity file(s)",
 		.usage_str =
 "    fsverity measure FILE...\n"
-#endif /* _WIN32 */
+#endif /* !_WIN32 */
 	}, {
 		.name = "sign",
 		.func = fsverity_cmd_sign,