patch 8.2.4979: accessing freed memory when line is flushed

Problem:    Accessing freed memory when line is flushed.
Solution:   Make a copy of the pattern to search for.

src/version.c

@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4979,
 /**/
     4978,
 /**/