Fixed console.timeEnd() memleak.

Author: xeioex

nginx/ngx_js.c

@@ -1938,6 +1938,10 @@ ngx_qjs_ext_console_time_end(JSContext *cx, JSValueConst this_val, int argc,
     ngx_log_error(NGX_LOG_INFO, c->log, 0, "js: %V: %uL.%06uLms",
                   &name, ms, ns);
 
+    if (name.data != default_label.data) {
+        JS_FreeCString(cx, (char *) name.data);
+    }
+
     return JS_UNDEFINED;
 
 not_found:
@@ -1946,6 +1950,10 @@ ngx_qjs_ext_console_time_end(JSContext *cx, JSValueConst this_val, int argc,
     ngx_log_error(NGX_LOG_INFO, c->log, 0, "js: Timer \"%V\" doesn't exist",
                   &name);
 
+    if (name.data != default_label.data) {
+        JS_FreeCString(cx, (char *) name.data);
+    }
+
     return JS_UNDEFINED;
 }