patch 8.1.1375: without "TS" in 'shortmess' get a hit-enter prompt often

Problem:    Without "TS" in 'shortmess' get a hit-enter prompt often.
Solution:   Always truncate the search message.  Also avoid putting it in the
            message history. (closes #4413)

src/version.c

@@ -767,6 +767,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1375,
 /**/
     1374,
 /**/