curl: curl doesn't hide credentials in /proc/XXX/cmdline provided via CLI arguments

Summary: cleanarg helper func doesn't work, when credentials are provided without a whitespace to a short options flag, e.g. -uUSER:PASS vs -u USER:PASS or -UUSER:PASS vs -U UUSER:PASS Affected version curl -V curl 8.12.1 x8664-pc-linux-musl libcurl/8.12.1 OpenSSL/3.3.3 zlib/1.3.1 brotli/1.1.0...