cgo: Fix cgo regexp pattern
cgo: Fix cgo regexp pattern

- Fix wrong match that 'C.CXCursorAndRangeVisitor.|'

Signed-off-by: Koichi Shiraishi <2e5bdfebde234ed3509bcfc18121c70b6631e207@gmail.com>

zchee/deoplete-go,zchee/deoplete-go