Audio HAL: Fix UAF if the effect is removed after close
am: 532240f4eb

Change-Id: I3a6ce3da68a1be76858f936d437860503b93c03b
diff --git a/audio/effect/all-versions/default/Effect.cpp b/audio/effect/all-versions/default/Effect.cpp
index 0afa779..33ec996 100644
--- a/audio/effect/all-versions/default/Effect.cpp
+++ b/audio/effect/all-versions/default/Effect.cpp
@@ -713,7 +713,10 @@
 #elif MAJOR_VERSION >= 6
     // No need to join the processing thread, it is part of the API contract that the client
     // must finish processing before closing the effect.
-    return analyzeStatus("EffectRelease", "", sContextCallFunction, EffectRelease(mHandle));
+    Result retval =
+            analyzeStatus("EffectRelease", "", sContextCallFunction, EffectRelease(mHandle));
+    EffectMap::getInstance().remove(mHandle);
+    return retval;
 #endif
 }