The quiet mode (-q) does not work in some case

The quiet mode (-q) does not work in some case on my computer (OS X 10.11 with csrutil enable --without debug).

For example, when i running proxychains -q emacs, the message [proxychains] DLL init: proxychains-ng 4.11 appears in the content which retrieved from system clipboard every time.

Where the [proxychains] DLL init: proxychains-ng 4.11 from? I did a little bit changes to print proxychains_quiet_mode value in console, then i got these:

$ proxychains4 -q npm install
[proxychains] [quiet=0] DLL init: proxychains-ng
[proxychains] [quiet=0] DLL init: proxychains-ng
[proxychains] [quiet=0] DLL init: proxychains-ng
[proxychains] [quiet=0] DLL init: proxychains-ng
[proxychains] [quiet=0] DLL init: proxychains-ng
[proxychains] [quiet=0] DLL init: proxychains-ng
[proxychains] [quiet=0] DLL init: proxychains-ng
[proxychains] [quiet=0] DLL init: proxychains-ng
[proxychains] [quiet=0] DLL init: proxychains-ng
[proxychains] [quiet=0] DLL init: proxychains-ng

Following are the installation procedures and scripts:

$ brew install ~/scratch/proxychains-ng.rb --HEAD
$ cat ~/scratch/proxychains-ng.rb
class ProxychainsNg < Formula
  desc "Hook preloader"
  homepage "https://sourceforge.net/projects/proxychains-ng/"
  url "https://downloads.sourceforge.net/project/proxychains-ng/proxychains-ng-4.11.tar.bz2"
  sha256 "dcc4149808cd1fb5d9663cc09791f478805816b1f017381f424414c47f6376b6"

  head "https://github.com/rofl0r/proxychains-ng.git"

  bottle do
    sha256 "3a54f2ae04b107b97db3a0522f06cc77c0420bf7a562a07d4938c209e34d53ca" => :el_capitan
    sha256 "336d042fcdef471d60bca6233c834db94b85c911425efba8bf442b6affc0db00" => :yosemite
    sha256 "2707450f3238082aeef0884770eabae0167d17c1029840a5ab48db0af320b254" => :mavericks
  end

  option :universal

  def install
    args = ["--prefix=#{prefix}", "--sysconfdir=#{prefix}/etc"]
    if build.universal?
      ENV.universal_binary
      args << "--fat-binary"
    end
    system "./configure", *args
    system "make"
    system "make", "install"
    system "make", "install-config"
  end

  test do
    assert_match "config file found", shell_output("#{bin}/proxychains4 test 2>&1", 1)
  end

  patch :DATA
end
__END__
diff --git a/src/libproxychains.c b/src/libproxychains.c
index 1240448..882eb23 100644
--- a/src/libproxychains.c
+++ b/src/libproxychains.c
@@ -122,7 +122,7 @@ static void do_init(void) {
    get_chain_data(proxychains_pd, &proxychains_proxy_count, &proxychains_ct);
    DUMP_PROXY_CHAIN(proxychains_pd, proxychains_proxy_count);

-   proxychains_write_log(LOG_PREFIX "DLL init: proxychains-ng %s\n", proxychains_get_version());
+   proxychains_write_log(LOG_PREFIX "[quiet=%d] DLL init: proxychains-ng %s\n", proxychains_quiet_mode, proxychains_get_version());

    setup_hooks();

Start by reproducing the report with proxychains4 -q npm install on the stated OS X setup, then read src/libproxychains.c around do_init() and the proxychains_quiet_mode value shown in the issue. Done means the quiet-mode invocation no longer emits the DLL initialization message, including when output is retrieved from the system clipboard.