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bugfix: check for 0 before free_ref

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This commit is contained in:
Krasimir Angelov
2022-10-08 08:08:30 +02:00
parent 35d6a12074
commit 706b74a15b
1 changed files with 2 additions and 1 deletions
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3
src/runtime/c/pgf/pgf.cxx
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@@ -615,7 +615,8 @@ PgfExpr pgf_read_expr(PgfText *input, PgfUnmarshaller *u)
PgfExprParser parser(input, u);
PgfExpr res = parser.parse_expr();
if (!parser.eof()) {
u->free_ref(res);
if (res != 0)
u->free_ref(res);
return 0;
}
return res;