remove length in ShmSocket ctor, not used.

lichao

2021-06-01 f7f8fbc85c48b003d1e3094a94a3528001977977

 .gitignore

@@ -1,2 +1,13 @@
*.un~

build/
debug/
release/
Makefile
utest/utest
*.bak
gmon.out
*/bhshmq_center
*/help
*/bhshmqbox
*/bhshmq_status
.idea