get rid of pointless checks for NULL ->i_op

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --cc fs/cachefiles/bind.c
Simple merge

diff --cc fs/cachefiles/namei.c
Simple merge

diff --cc security/integrity/evm/evm_crypto.c
Simple merge

diff --cc security/integrity/evm/evm_main.c
Simple merge

diff --cc security/tomoyo/realpath.c
Simple merge