patch 9.0.2188: cursor wrong after { in single line buffer

Problem:  cursor wrong after { in single line buffer
          (Edwin Chan)
Solution: do not place the cursor at the end for a single
          line buffer when moving backwards
          (Gary Johnson)

closes: #13780
closes: #13783

Signed-off-by: Gary Johnson <garyjohn@spocom.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/textobject.c b/src/textobject.c
index b315d03..d03b624 100644
--- a/src/textobject.c
+++ b/src/textobject.c
@@ -226,7 +226,7 @@
     if (both && *ml_get(curr) == '}')	// include line with '}'
 	++curr;
     curwin->w_cursor.lnum = curr;
-    if (curr == curbuf->b_ml.ml_line_count && what != '}')
+    if (curr == curbuf->b_ml.ml_line_count && what != '}' && dir == FORWARD)
     {
 	char_u *line = ml_get(curr);