patch 8.1.0784: messy indent in if statement

Problem:    Messy indent in if statement.
Solution:   Improve structure of if statement. (Ozaki Kiichi, closes #3826)

src/version.c

@@ -791,6 +791,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    784,
 /**/
     783,
 /**/