patch 7.4.839

Problem:    Compiler warning on 64-bit system.
Solution:   Add cast to int. (Mike Williams)

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    839,
 /**/
     838,
 /**/