Fix incorrect NULL check in IncFsFileMap reference assertions

Since IncFsFileMap&& is not a pointer type, the check should
verify the validity of its underlying data.

Change-Id: Ica43ab671831b3e3bb61472e0446aa6dbf51ba91
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: Jackeagle <jackeagle102@gmail.com>
1 file changed