patch 8.2.1938: wiping out a terminal buffer makes some tests fail

Problem:    Wiping out a terminal buffer makes some tests fail.
Solution:   Do not wipe out the terminal buffer unless wanted.
diff --git a/src/version.c b/src/version.c
index 65050b9..3cba214 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1938,
+/**/
     1937,
 /**/
     1936,