BUILD: SSL: allow to pass additional configure args to QUICTLS

this allows to pass QUICTLS_EXTRA_ARGS to QUICTLS builds. if no
 additional arg is passed, behaviour is kept unchanged

--
v2 indentation fixed

scripts/build-ssl.sh

@@ -134,11 +134,10 @@ fi
 
 if [ ! -z ${QUICTLS+x} ]; then
         (
-
         download_quictls
         cd download-cache/quictls
 
-        ./config shared --prefix="${HOME}/opt" --openssldir="${HOME}/opt" --libdir=lib -DPURIFY
+        ./config shared  ${QUICTLS_EXTRA_ARGS:-} --prefix="${HOME}/opt" --openssldir="${HOME}/opt" --libdir=lib -DPURIFY
         make -j$(nproc) build_sw
         make install_sw