newAddress doesn't rewrite the identity file on windows (possibly linux)

[dovholuknf]

Steps to reproduce

• Start a controller
• enroll an identity
• modify the controller to surface a new set of edge APIs with the same address, different port
• setup the newAddress field pointing back to the same controller in the "old" edge api section
• restart the controller
• observe controller supplied new address[https://same_host:new_port_here]
• open the identity file, observe the old port still written in the file
• the C SDK context seems to have been updated properly as it polls the new port, per the logs: ctrl_paging_req() ctrl[same_host:new_port_here] starting paging request

Expected Behavior

• the identity file should be rewritten with the newAddress