coverage.sh: Make xml_attr_info_enabled match unicode_enabled

expat/coverage.sh

@@ -41,7 +41,7 @@ _configure() {
     ${unicode_enabled} \
             && configure_args+=( CPPFLAGS='-DXML_UNICODE -DXML_UNICODE_WCHAR_T' )
 
-    if [[ "${xml_attr_info}" = true ]]; then
+    if [[ "${xml_attr_info_enabled}" = true ]]; then
         configure_args+=( --enable-xml-attr-info )
     fi
 
@@ -215,7 +215,7 @@ _main() {
                 continue
             fi
 
-            for xml_attr_info in true false ; do
+            for xml_attr_info_enabled in true false ; do
                 for xml_context in 0 1024 ; do
                     _build_case
                 done