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-rw-r--r--src/base/acb/acbUtil.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/base/acb/acbUtil.c b/src/base/acb/acbUtil.c
index ecf84bb6..1b6f1039 100644
--- a/src/base/acb/acbUtil.c
+++ b/src/base/acb/acbUtil.c
@@ -652,8 +652,8 @@ int Acb_NtkExtract( char * pFileName0, char * pFileName1, int fVerbose,
*pvNodes = Acb_NtkCollectCopies( pNtkF, pGiaF, pvNodesR );
RetValue = 1;
}
- if ( pNtkF->pDesign ) Acb_ManFree( pNtkF->pDesign );
- if ( pNtkG->pDesign ) Acb_ManFree( pNtkG->pDesign );
+ if ( pNtkF ) Acb_ManFree( pNtkF->pDesign );
+ if ( pNtkG ) Acb_ManFree( pNtkG->pDesign );
return RetValue;
}