drm/i915: Fix #endif comment

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Signed-off-by: NDamien Lespiau <damien.lespiau@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_gem_debug.c

@@ -115,4 +115,4 @@ i915_verify_lists(struct drm_device *dev)
 
 	return warned = err;
 }
-#endif /* WATCH_INACTIVE */
+#endif /* WATCH_LIST */