patch 9.0.0351: message window may obscure the command line

Problem:    Message window may obscure the command line.
Solution:   Reduce the maximum height of the message window.
diff --git a/src/version.c b/src/version.c
index f7d7d62..4c05bb0 100644
--- a/src/version.c
+++ b/src/version.c
@@ -708,6 +708,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    351,
+/**/
     350,
 /**/
     349,