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diff -up ksh-20120801/src/cmd/ksh93/sh/xec.c.fununset ksh-20120801/src/cmd/ksh93/sh/xec.c
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--- ksh-20120801/src/cmd/ksh93/sh/xec.c.fununset	2014-06-16 14:21:09.293513844 +0200
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+++ ksh-20120801/src/cmd/ksh93/sh/xec.c	2014-06-16 14:21:09.309513760 +0200
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@@ -3570,7 +3570,7 @@ static void sh_funct(Shell_t *shp,Namval
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 #endif
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 	nv_putval(SH_PATHNAMENOD,shp->st.filename,NV_NOFREE);
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 	shp->pipepid = pipepid;
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-	np->nvalue.rp->running  -= 2;
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+	if (np->nvalue.rp) np->nvalue.rp->running  -= 2;
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 }
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 /*