datapath: Fix check-export-symbol for non-bash shells
Avoid using a bash construct (=~) in the target.
An alternative would be to make the configure script require
bash explicitly. (Currently it doesn't and on NetBSD /bin/ksh
is likely used.)
The code in question was introduced by
commit
b296b82a87326e68773b970284b8e012def0e3ba .
("datapath: Check the export of public functions in linux/compat/linux/.")
Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Acked-by: Alex Wang <alexw@nicira.com>