patch 8.0.1790: 'winfixwidth' is not always respected by :close

Problem:    'winfixwidth' is not always respected by :close.
Solution:   Prefer a frame without 'winfixwidth' or 'winfixheight'. (Jason
            Franklin)
diff --git a/src/version.c b/src/version.c
index 9d00e46..467b14e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1790,
+/**/
     1789,
 /**/
     1788,