intel: Only define variable when it's used.

Signed-off-by: Thomas Klausner <wiz@NetBSD.org>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@ubuntu.com>

intel/test_decode.c

@@ -91,7 +91,10 @@ compare_batch(struct drm_intel_decode *ctx, const char *batch_filename)
 {
 	FILE *out = NULL;
 	void *ptr, *ref_ptr, *batch_ptr;
-	size_t size, ref_size, batch_size;
+#ifdef HAVE_OPEN_MEMSTREAM
+	size_t size;
+#endif
+	size_t ref_size, batch_size;
 	const char *ref_suffix = "-ref.txt";
 	char *ref_filename;