proxy: Avoids triggering bounds check in std::string_view

Check for empty string_view instead of first byte being '\0';
this otherwise breaks when compiling with higher ABI version.

1 files changed, 1 insertions, 1 deletions

diff --git a/apt-pkg/contrib/proxy.cc b/apt-pkg/contrib/proxy.cc
index 9a9a9f29c..aad272190 100644
--- a/apt-pkg/contrib/proxy.cc
+++ b/apt-pkg/contrib/proxy.cc
@@ -91,7 +91,7 @@ bool AutoDetectProxy(URI &URL)
       return true;
    APT::StringView const cleanedbuf = _strstrip(buf);
    // We warn about this as the implementor probably meant to use DIRECT instead
-   if (cleanedbuf[0] == '\0')
+   if (cleanedbuf.empty())
    {
       _error->Warning("ProxyAutoDetect command returned an empty line");
       return true;