Match a comment to reduce differences with libarchive.googlecode.com.

usr.bin/tar/bsdtar.c

@@ -114,7 +114,7 @@ main(int argc, char **argv)
 	bsdtar->fd = -1; /* Mark as "unused" */
 	option_o = 0;
 #ifdef _WIN32
-	/* open() function is always with a binary mode. */
+	/* Make sure open() function will be used with a binary mode. */
 	_set_fmode(_O_BINARY);
 #endif
 

usr.bin/tar/test/main.c

@@ -921,6 +921,10 @@ int main(int argc, char **argv)
 
 	(void)argc; /* UNUSED */
 
+#ifdef _WIN32
+	/* Make sure open() function will be used with a binary mode. */
+	_set_fmode(_O_BINARY);
+#endif
 	/*
 	 * Name of this program, used to build root of our temp directory
 	 * tree.