[PATCH wayland] test-runner: wait for concrete pid

[Marek Chalupa]

After running a test in fork, we were waiting for any child to terminate.
It is OK unless the child forks again. If the child calls fork, the waitid can
catch the child's child termination, stop block and run another test
while the former test is still running. This is racy i. e. when adding socket.
Since we have test compositor which uses fork, this situation can occur
pretty frequently.

Signed-off-by: Marek Chalupa <mchqwerty at gmail.com>
---
 tests/test-runner.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/test-runner.c b/tests/test-runner.c
index 70fa0ae..0412e85 100644
--- a/tests/test-runner.c
+++ b/tests/test-runner.c
@@ -351,7 +351,7 @@ int main(int argc, char *argv[])
 		if (pid == 0)
 			run_test(t); /* never returns */
 
-		if (waitid(P_ALL, 0, &info, WEXITED)) {
+		if (waitid(P_PID, pid, &info, WEXITED)) {
 			stderr_set_color(RED);
 			fprintf(stderr, "waitid failed: %m\n");
 			stderr_reset_color();
-- 
2.2.2