fix password echo on darwin.

src/kit/shell/src/shellDarwin.c

@@ -98,6 +98,7 @@ void shellParseArgument(int argc, char *argv[], SShellArguments *arguments) {
             tstrncpy(g_password, (char *)(argv[i] + 2), SHELL_MAX_PASSWORD_LEN);
         }
         arguments->password = g_password;
+        arguments->is_use_passwd = true;
         strcpy(argv[i], "");
         argc -= 1;
     }

src/os/src/darwin/darwinSystem.c

@@ -31,7 +31,6 @@ void taosCloseDll(void *handle) {
 
 int taosSetConsoleEcho(bool on)
 {
-#if 0
 #define ECHOFLAGS (ECHO | ECHOE | ECHOK | ECHONL)
     int err;
     struct termios term;
@@ -52,7 +51,6 @@ int taosSetConsoleEcho(bool on)
         return -1;
     }
 
-#endif
     return 0;
 }