[njs] Shell: fixed memory leak when empty line is entered.

[Alexander Borisov]

details:   https://hg.nginx.org/njs/rev/afe38b7fabe4
branches:  
changeset: 1273:afe38b7fabe4
user:      Alexander Borisov <alexander.borisov at nginx.com>
date:      Tue Dec 03 16:43:04 2019 +0300
description:
Shell: fixed memory leak when empty line is entered.

diffstat:

 src/njs_shell.c |  9 ++++-----
 1 files changed, 4 insertions(+), 5 deletions(-)

diffs (21 lines):

diff -r 5b1bf60c8ede -r afe38b7fabe4 src/njs_shell.c
--- a/src/njs_shell.c	Tue Dec 03 14:59:26 2019 +0300
+++ b/src/njs_shell.c	Tue Dec 03 16:43:04 2019 +0300
@@ -869,13 +869,12 @@ njs_interactive_shell(njs_opts_t *opts, 
         }
 
         line.length = njs_strlen(line.start);
-        if (line.length == 0) {
-            continue;
-        }
 
-        add_history((char *) line.start);
+        if (line.length != 0) {
+            add_history((char *) line.start);
 
-        njs_process_script(opts, vm_options->external, &line);
+            njs_process_script(opts, vm_options->external, &line);
+        }
 
         /* editline allocs a new buffer every time. */
         free(line.start);