patch 7.4.1531

Problem:    Compiler warning for unitinialized variable. (Dominique Pelle)
Solution:   Always give the variable a value.

src/version.c

@@ -743,6 +743,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1531,
 /**/
     1530,
 /**/