Fix unicode.rsplit()'s bug that ignores separater on the end of string when
using specialized splitter for 1 char sep.
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index b3c4a01..636dfcc 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -4294,7 +4294,7 @@
 	} else
 	    i--;
     }
-    if (j >= 0) {
+    if (j >= -1) {
 	SPLIT_INSERT(self->str, 0, j + 1);
     }
     return list;