kernel32/tests: Avoid a race in test_WaitForJobObject().

Waiting for and closing the job object does not kill the child process
which then may print its 'tests executed' line at the same time as the
parent traces, sometimes mangling failure messages.

Signed-off-by: Francois Gouget <fgouget@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

dlls/kernel32/tests/process.c

@@ -2809,6 +2809,7 @@ static void test_WaitForJobObject(void)
     dwret = WaitForSingleObject(job, 100);
     ok(dwret == WAIT_TIMEOUT, "WaitForSingleObject returned %u\n", dwret);
 
+    WaitForSingleObject(pi.hProcess, 1000);
     CloseHandle(pi.hProcess);
     CloseHandle(pi.hThread);
     CloseHandle(job);