genrecog.c (write_subroutine): Careful for null trees.
* genrecog.c (write_subroutine): Careful for null trees. (process_tree): Don't elide empty functions. From-SVN: r29948
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* genrecog.c (write_subroutine): Careful for null trees. (process_tree): Don't elide empty functions. From-SVN: r29948