title: Coverity issue : Explicit Null dereferenced
body: <p>I have the following section of code, which gives explicit null dereferenced. </p>
  
  <pre><code>uint64_t *var1 = NULL;
  
  char *var2 = NULL;
  
  
  //Alias transfer
  
  var1 = (uint64_t *) var2;
  
  //Dereferencing Null Pointer
  
  *var1 = 0;
  </code></pre>
  
  <p>Can this be fixed if I reassign the *var1 to NULL again ??</p>