complete-run: Bugfix: return condvar when $dont_start is true

testcases/complete-run.pl

@@ -165,11 +165,14 @@ sub take_job {
     }
 
     my $kill_i3 = sub {
-        # Don’t bother killing i3 when we haven’t started it
-        return if $dont_start;
-
         my $kill_cv = AnyEvent->condvar;
 
+        # Don’t bother killing i3 when we haven’t started it
+        if ($dont_start) {
+            $kill_cv->send();
+            return $kill_cv;
+        }
+
         # When measuring code coverage, try to exit i3 cleanly (otherwise, .gcda
         # files are not written) and fallback to killing it
         if ($coverage_testing || $valgrind) {