Remove redundant use of local variable in CliKeyExch writing
diff --git a/library/ssl_cli.c b/library/ssl_cli.c
index 07ee2bb..8e86592 100644
--- a/library/ssl_cli.c
+++ b/library/ssl_cli.c
@@ -3591,7 +3591,6 @@
         {
             ((void) ret);
             ((void) end);
-            n = 0;
         }
         else
 #endif