netlink_delinearize: don't reset source register after read

Range expression use a single load and two comparisons. Don't reset the
source register in netlink_delinearize when reading it.

Fixes: "Relational expression has no left hand side" for range (x-y)
expressions.

Signed-off-by: Patrick McHardy <kaber@trash.net>

1 files changed, 0 insertions, 1 deletions

diff --git a/src/netlink_delinearize.c b/src/netlink_delinearize.c
index 4ecf4f57..50672b98 100644
--- a/src/netlink_delinearize.c
+++ b/src/netlink_delinearize.c
@@ -64,7 +64,6 @@ static struct expr *netlink_get_register(struct netlink_parse_ctx *ctx,
 	}
 
 	expr = ctx->registers[reg];
-	ctx->registers[reg] = NULL;
 	return expr;
 }