patch 7.4.2178

Problem:    No test for reading from stdin.
Solution:   Add a test.

src/version.c

@@ -763,6 +763,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2178,
 /**/
     2177,
 /**/