patch 8.2.1917: no test for improved Man command

Problem:    No test for improved Man command.
Solution:   Test that shell arguments are properly escaped.

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1917,
 /**/
     1916,
 /**/