patch 8.2.3513: using freed memory when using a timer and searching

Problem:    Using freed memory when using a timer and searching. (Dominique
            Pellé)
Solution:   Allocated mr_pattern.

src/version.c

@@ -757,6 +757,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3513,
 /**/
     3512,
 /**/