[tools] winetest/dissect: Don't issue multiple errors in check_unit().

[Francois Gouget]

Don't complain about misplaced lines after the first one has been
reported (or if the test has already been tagged as broken for some
other reason, e.g. missing start line).

Signed-off-by: Francois Gouget 
---

This matches the TestBot behavior.

winetest/dissect | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/winetest/dissect b/winetest/dissect
index 27bcf1704..12a939d28 100755
--- a/winetest/dissect
+++ b/winetest/dissect
@@ -483,7 +483,7 @@ sub add_test_line($$)
 sub check_unit($$)
 {
     my ($l_unit, $l_type) = @_;
-    if (!$units{$l_unit})
+    if (!$units{$l_unit} and !$broken)
     {
         add_test_line("end", "Misplaced $l_type message\n");
         $extra_failures++;