python: pane_cmp should return -1, 0, or 1

else python complains.

Signed-off-by: NeilBrown <neil@brown.name>

diff --git a/lang-python.c b/lang-python.c
index 15527d6eb49b718c5fcfec3a8b966490537f0d74..9372ed439831f9aa6974f92c4f5e5e2a3e90c474 100644 (file)
--- a/lang-python.c
+++ b/lang-python.c
@@ -540,7 +540,11 @@ static long pane_hash(Pane *p)
 
 static long pane_cmp(Pane *p1, Pane *p2)
 {
-       return (long)p1->pane - (long)p2->pane;
+       if (p1->pane == p2->pane)
+               return 0;
+       if (p1->pane < p2->pane)
+               return -1;
+       return 1;
 }
 
 static PyGetSetDef pane_getseters[] = {