timing(IssueQueue): fix timing of ldCancel

[xiaofeibao-xjtu]

No description provided.

[XiangShanRobot]

[Generated by IPC robot]
commit: abf4496

commit	astar	copy_and_run	coremark	gcc	gromacs	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
abf4496	1.934	0.450	2.695	1.192	2.812	2.465	2.399	0.918	1.397	1.609	3.424	2.761	2.429	3.275

master branch:

commit	astar	copy_and_run	coremark	gcc	gromacs	lbm	linux	mcf	microbench	milc	namd	povray	wrf	xalancbmk
c0a99c0				1.192	2.812	2.465		0.918		1.609	3.424		2.429	3.275
b9db2c7		0.450	2.695				2.399		1.397			2.761
f3640a5	1.934	0.450	2.695	1.192	2.812	2.463	2.399	0.918	1.397	1.609	3.424	2.761	2.429	3.275
e0c1f27		0.450	2.695				2.399		1.397			2.761
8338e67	1.934	0.450	2.695	1.194	2.812	2.465	2.400	0.916	1.397	1.626	3.426	2.747	2.429	3.271
cacfe22	1.934	0.450	2.695	1.194	2.812	2.465	2.400	0.916	1.397	1.626	3.426	2.747	2.429	3.271
556c96d	1.934	0.450	2.695	1.194	2.812	2.465	2.400	0.918	1.397	1.626	3.426	2.747	2.429	3.271
b4d41c1	1.858	0.450	2.695	1.186	2.801	2.445	2.400	0.919	1.397	1.433	3.393	2.747	2.423	3.212