updated for version 7.3.522

Problem:    Crash in vim_realloc() when using MEM_PROFILE.
Solution:   Avoid using a NULL argument. (Dominique Pelle)

src/version.c

@@ -714,6 +714,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    522,
 /**/
     521,
 /**/