patch 7.4.910

Problem:    Compiler complains about type punned pointer.
Solution:   Use another way to increment the ref count.

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    910,
 /**/
     909,
 /**/