X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=src%2Fcompute.c;h=546c56ae83b91c6a6155e8650d59d9d9330c67af;hb=067d02c2b8c591efc368cf5127c497313d7a373f;hp=6556e8becac0041d63303556817f6f203f4fd09d;hpb=3caec9acde088184ec125733b3bdfd7e1cd019a8;p=pspp

diff --git a/src/compute.c b/src/compute.c
index 6556e8beca..546c56ae83 100644
--- a/src/compute.c
+++ b/src/compute.c
@@ -440,6 +440,9 @@ lvalue_finalize (struct lvalue *lvalue,
 static void 
 lvalue_destroy (struct lvalue *lvalue) 
 {
+  if ( ! lvalue ) 
+     return ;
+
   expr_free (lvalue->element);
   free (lvalue);
 }