Merge branch 'bugfix/linenoise_unint_buffer_and_color' into 'master'

console: linenoise: fix usage of an uninitialized buffer, fix no-color output

Closes IDF-2752

See merge request espressif/esp-idf!17470

components/console/esp_console_repl.c

@@ -368,6 +368,8 @@ static esp_err_t esp_console_common_init(size_t max_cmdline_length, esp_console_
 
 #if CONFIG_LOG_COLORS
     console_config.hint_color = atoi(LOG_COLOR_CYAN);
+#else
+    console_config.hint_color = -1;
 #endif
     ret = esp_console_init(&console_config);
     if (ret != ESP_OK) {

components/console/linenoise/linenoise.c

@@ -501,9 +501,10 @@ void refreshShowHints(struct abuf *ab, struct linenoiseState *l, int plen) {
             int hintmaxlen = l->cols-(plen+l->len);
             if (hintlen > hintmaxlen) hintlen = hintmaxlen;
             if (bold == 1 && color == -1) color = 37;
-            if (color != -1 || bold != 0)
+            if (color != -1 || bold != 0) {
                 snprintf(seq,64,"\033[%d;%d;49m",bold,color);
-            abAppend(ab,seq,strlen(seq));
+                abAppend(ab,seq,strlen(seq));
+            }
             abAppend(ab,hint,hintlen);
             if (color != -1 || bold != 0)
                 abAppend(ab,"\033[0m",4);