patch 8.0.1371: Shift-Insert doesn't always work in MS-Windows console

Problem:    Shift-Insert doesn't always work in MS-Windows console.
Solution:   Handle K_NUL differently if the second character is more than one
            byte. (Yasuhiro Matsumoto, closes #2381)
diff --git a/src/version.c b/src/version.c
index d7f22b0..73b71d6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1371,
+/**/
     1370,
 /**/
     1369,