Properly freeing Protocol Buffer memory

I am using Google Protocol Buffers in the following way:

void myfunc() {
     Buffers::MyBuffer buf;
     buf.ParseFromArray(data, datalen);
     ...
     return;
 }
 

The documentation for Protocol Buffers says that to free memory for a buffer that the object should be deleted. I'm no C++ genius, but I thought delete should only be called for objects allocated with new. Is memory cleaned up on return here?

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