Improve A2DP Bits handling

Test: m
Bug: 316413963
Flag: EXEMPT small improvement non flaggable
Change-Id: I5b6a6bbb130f9c9222373e3927d23908d1f8a351
diff --git a/bluetooth/audio/aidl/default/A2dpBits.h b/bluetooth/audio/aidl/default/A2dpBits.h
index f467c95..fb7587c 100644
--- a/bluetooth/audio/aidl/default/A2dpBits.h
+++ b/bluetooth/audio/aidl/default/A2dpBits.h
@@ -23,7 +23,8 @@
   uint8_t* data_;
 
  public:
-  A2dpBits(const std::vector<uint8_t>& vector) : cdata_(vector.data()) {}
+  A2dpBits(const std::vector<uint8_t>& vector)
+      : cdata_(vector.data()), data_(nullptr) {}
 
   A2dpBits(std::vector<uint8_t>& vector)
       : cdata_(vector.data()), data_(vector.data()) {}