Bugfix: no #line dir with 0 generated

todo.txt

@@ -15,7 +15,6 @@ High priority (version 0.9.0)
 - implement explicit varargs
 - tests: run modules that contain "#RUN_ME", compile the other
   modules; run the GC tests
-- fix implicit generic routines
 - fix the streams implementation so that it uses methods
 - fix overloading resolution
 - wrong co-/contravariance
@@ -30,6 +29,7 @@ Bugs
 - BUG: generic assign still buggy
   - Optimization: If we use a temporary for the result anyway the code gen
     should make use of this fact to generate better code...
+- bug: invoking a generic iterator twice triggers a code gen bug
 - sorting with leads to a strange memory corruption!
   --> system.swap or genericAssign is broken! And indeed, if reference counts
       are not modified and the GC is triggered in between a swap, bad things
@@ -74,6 +74,7 @@ Low priority
 - 'nimrod def': does not always work
 - test branch coverage
 - checked exceptions
+- fix implicit generic routines
 
 
 Library