patch 8.2.2726: confusing error message with white space before comma

Problem:    Confusing error message with white space before comma in the
            arguments of a function declaration.
Solution:   Give a specific error message. (closes #2235)

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2726,
 /**/
     2725,
 /**/