s4/ntvfs/cifs: cppcheck: squash nullPointer: Possible null pointer dereference
Fix the following cppcheck warnings
/home/samba/samba-pidl/source4/ntvfs/cifs/vfs_cifs.c:604: warning: nullPointer: Possible null pointer dereference: file <--[cppcheck]
/home/samba/samba-pidl/source4/ntvfs/cifs/vfs_cifs.c:605: warning: nullPointer: Possible null pointer dereference: file <--[cppcheck]
/home/samba/samba-pidl/source4/ntvfs/cifs/vfs_cifs.c:648: warning: nullPointer: Possible null pointer dereference: file <--[cppcheck]
/home/samba/samba-pidl/source4/ntvfs/cifs/vfs_cifs.c:649: warning: nullPointer: Possible null pointer dereference: file <--[cppcheck]
Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Andreas Schneider <asn@samba.org>