Kodi doesn't set the CAPATH and CAINFO parameters for libcurl. To make HTTPS
connections work we can set them based on SSL_CERT_DIR and SSL_CERT_FILE.

--- a/xbmc/filesystem/CurlFile.cpp
+++ b/xbmc/filesystem/CurlFile.cpp
@@ -626,5 +626,9 @@
   // Setup allowed TLS/SSL ciphers. New versions of cURL may deprecate things that are still in use.
   if (!m_cipherlist.empty())
     g_curlInterface.easy_setopt(h, CURLOPT_SSL_CIPHER_LIST, m_cipherlist.c_str());
+
+  // Load certificate data from environment paths
+  g_curlInterface.easy_setopt(m_state->m_easyHandle, CURLOPT_CAPATH, getenv("SSL_CERT_DIR"));
+  g_curlInterface.easy_setopt(m_state->m_easyHandle, CURLOPT_CAINFO, getenv("SSL_CERT_FILE"));
 }
 
 void CCurlFile::SetRequestHeaders(CReadState* state)