patch 8.1.1088: height of quickfix window not retained with vertical split

Problem:    Height of quickfix window not retained with vertical split.
Solution:   Use frame_fixed_height() and frame_fixed_width(). (Hongbo Liu,
            closes #4013, closes #2998)
diff --git a/src/version.c b/src/version.c
index 6d1df32..3361685 100644
--- a/src/version.c
+++ b/src/version.c
@@ -776,6 +776,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1088,
+/**/
     1087,
 /**/
     1086,