patch 8.1.0801: MinGW: no hint that tests fail because of small terminal

Problem:    MinGW: no hint that tests fail because of small terminal.
Solution:   Add a rule for test1 that checks for "wrongtermsize".
            (msoyka-of-wharton)
diff --git a/src/version.c b/src/version.c
index b8b0630..d662965 100644
--- a/src/version.c
+++ b/src/version.c
@@ -792,6 +792,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    801,
+/**/
     800,
 /**/
     799,