Mark a couple bugs found to not lose track, and add a regression test.

lslopt/lslparse.py

@@ -1652,6 +1652,8 @@ list lazy_list_set(list L, integer i, list v)
                 # we always do and open a new scope for it. At worst it will be
                 # empty. At least it is not reflected as braces in the code if
                 # braces are not used.
+                # FIXME: This causes issues with this code that should work:
+                #   default{timer(){ jump x; while(1) @x; }}
                 self.PushScope()
 
                 self.breakstack.append([self.GenerateLabel(), self.scopeindex, False])