shithub: mc

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Null sets become null sets.

--- a/parse/bitset.c

+++ b/parse/bitset.c

@@ -43,6 +43,8 @@

 {

     Bitset *bs;

+    if (!a)

+        return NULL;

     bs = xalloc(sizeof(Bitset));

     bs->nchunks = a->nchunks;

     bs->chunks = xalloc(a->nchunks*sizeof(size_t));