[NAN] Fix bad merge use rethrowFromSystemServer

Added 'throw' to the 'e.rethrowXXX()'. Not needed but seems
to be the accepted style.

Change-Id: I75e42d68ee6092699a55e26ee05151373139606d
(cherry picked from commit cb34ec8f3a8dd40f7c49181b008de7314735ca66)
1 file changed