perf build: Ensure libtraceevent and libtracefs versions have 3 components

When either of these have a shorter version, like 1.8, the expression
that computes the version has a syntax error that can be seen in the
output of make:

expr: syntax error: missing argument after +

Link: https://bugs.gentoo.org/917559
Reported-by: Peter Volkov <[email protected]>
Signed-off-by: Guilherme Amadio <[email protected]>
Reviewed-by: Leo Yan <[email protected]>
Signed-off-by: Namhyung Kim <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

0 files changed, 0 insertions, 0 deletions