Net: Add LocalSocket::socket_path()

This is a little utility function to safely extract the path without
manually dealing with sun_path and null-termination.

Kernel/Net/LocalSocket.cpp

@@ -227,3 +227,9 @@ ssize_t LocalSocket::recvfrom(FileDescription& description, void* buffer, size_t
     }
     ASSERT_NOT_REACHED();
 }
+
+StringView LocalSocket::socket_path() const
+{
+    int len = strnlen(m_address.sun_path, sizeof(m_address.sun_path));
+    return { m_address.sun_path, len };
+}