Fix wrong erl_compare_ext result comparing lists

Function erl_compare_ext of erl_interface library returns
1 instead -1 when comparing lists like [0] and [0, 1000].

Credits to: Evgeny Khirin <evgeny.khirin <at> erlios.com>

1 files changed, 8 insertions, 5 deletions

diff --git a/lib/erl_interface/src/legacy/erl_marshal.c b/lib/erl_interface/src/legacy/erl_marshal.c
index a6c2f64dd0..70949a7adf 100644
--- a/lib/erl_interface/src/legacy/erl_marshal.c
+++ b/lib/erl_interface/src/legacy/erl_marshal.c
@@ -1646,11 +1646,14 @@ static int cmp_exe2(unsigned char **e1, unsigned char **e2)
       min = (i < j) ? i : j;
       k = 0;
       while (1) {
-	if (k++ == min)
-	  return compare_top_ext(e1 , e2);
-	if ((ret = compare_top_ext(e1 , e2)) == 0) 
-	  continue;
-	return ret;
+	  if (k++ == min){
+	      if (i == j) return 0;
+	      if (i < j) return -1;
+	      return 1;
+	  }
+	  if ((ret = compare_top_ext(e1 , e2)) == 0)
+	      continue;
+	  return ret;
       }
     case ERL_STRING_EXT:
       i = (**e1 << 8) | ((*e1)[1]);