Fix typo introduced by manual merge

Manual merge from previous commit contains an incorrect copy-paste
error.

Test: Build
Change-Id: Icde12b12d06c12e9d89adec231ceee1d2bb01995
(cherry picked from commit c50f4206bdbd70506be8efc2b155ec7da4bab8c6)
diff --git a/include/gui/BufferQueue.h b/include/gui/BufferQueue.h
index d9292b7..ba5cbf7 100644
--- a/include/gui/BufferQueue.h
+++ b/include/gui/BufferQueue.h
@@ -57,7 +57,7 @@
     class ProxyConsumerListener : public BnConsumerListener {
     public:
         explicit ProxyConsumerListener(const wp<ConsumerListener>& consumerListener);
-        ~ProxyConsumerListener() const;
+        ~ProxyConsumerListener() override;
         void onDisconnect() override;
         void onFrameAvailable(const BufferItem& item) override;
         void onFrameReplaced(const BufferItem& item) override;