diff -Naur bzip2-1.0.2-orig/bzlib.c bzip2-1.0.2/bzlib.c --- bzip2-1.0.2-orig/bzlib.c 2002-01-05 02:48:41.000000000 +0200 +++ bzip2-1.0.2/bzlib.c 2004-12-22 15:12:52.824593032 +0200 @@ -1536,9 +1536,12 @@ void BZ_API(BZ2_bzclose) (BZFILE* b) { int bzerr; - FILE *fp = ((bzFile *)b)->handle; - + FILE *fp; + if (b==NULL) {return;} + + fp = ((bzFile *)b)->handle; + if(((bzFile*)b)->writing){ BZ2_bzWriteClose(&bzerr,b,0,NULL,NULL); if(bzerr != BZ_OK){