Clean up some compiler warnings

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6591 ab8295b8-cf94-4d9e-aec4-7959e3be5d79

Audio/BWFFile.cpp

@@ -49,7 +49,7 @@ namespace
     }
 
     char * operator & () {return reinterpret_cast<char *> (this);}
-    char const * operator & () const {return &*this;}
+    char const * operator & () const {return reinterpret_cast<char const *> (this);}
 
     std::array<char, 4> id_;
     quint32 size_;