LibVideo/VP9: Begin reference frame update process (8.10)

This was required for correctly parsing more than one frame's
height/width data properly. Additionally, start handling failure
a little more gracefully. Since we don't fully parse a tile before
starting to parse the next tile, we will now no longer make it past
the first tile mark, meaning we should not handle that scenario well.

Userland/Libraries/LibVideo/VP9/Utilities.h

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2021, Hunter Salyer <thefalsehonesty@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+namespace Video::VP9 {
+
+#define SAFE_CALL(call)             \
+    do {                            \
+        if (!(call)) [[unlikely]] { \
+            dbgln("FAILED " #call); \
+            return false;           \
+        }                           \
+    } while (0)
+
+}