fixed import parsing

lib/single-file/single-file-core.js

@@ -562,13 +562,13 @@ const SingleFileCore = (() => {
 	const REGEXP_URL_SIMPLE_QUOTES_FN = /^url\s*\(\s*'([^']*)'\s*\)$/i;
 	const REGEXP_URL_DOUBLE_QUOTES_FN = /^url\s*\(\s*"([^"]*)"\s*\)$/i;
 	const REGEXP_URL_NO_QUOTES_FN = /^url\s*\(\s*([^)]*)\s*\)$/i;
-	const REGEXP_IMPORT_FN = /(@import\s*url\s*\(\s*'([^']*)'\s*\)\s*([^;]*);?)|(@import\s*url\s*\(\s*"([^"]*)"\s*\)\s*([^;]*);?)|(@import\s*url\s*\(\s*([^)]*)\s*\)\s*([^;]*);?)|(@import\s*\(\s*'([^']*)'\s*\)\s*([^;]*);?)|(@import\s*\(\s*"([^"]*)"\s*\)\s*([^;]*);?)|(@import\s*\(\s*([^)]*)\s*\)\s*([^;]*);?)/gi;
+	const REGEXP_IMPORT_FN = /(@import\s*url\s*\(\s*'([^']*)'\s*\)\s*([^;]*);?)|(@import\s*url\s*\(\s*"([^"]*)"\s*\)\s*([^;]*);?)|(@import\s*url\s*\(\s*([^)]*)\s*\)\s*([^;]*);?)|(@import\s*'([^']*)'\s*([^;]*);?)|(@import\s*"([^"]*)"\s*([^;]*);?)|(@import\s*([^;]*)\s*([^;]*);?)/gi;
 	const REGEXP_IMPORT_URL_SIMPLE_QUOTES_FN = /@import\s*url\s*\(\s*'([^']*)'\s*\)\s*([^;]*)/i;
 	const REGEXP_IMPORT_URL_DOUBLE_QUOTES_FN = /@import\s*url\s*\(\s*"([^"]*)"\s*\)\s*([^;]*)/i;
 	const REGEXP_IMPORT_URL_NO_QUOTES_FN = /@import\s*url\s*\(\s*([^)]*)\s*\)\s*([^;]*)/i;
-	const REGEXP_IMPORT_SIMPLE_QUOTES_FN = /@import\s*\(\s*'([^']*)'\s*\)\s*([^;]*)/i;
-	const REGEXP_IMPORT_DOUBLE_QUOTES_FN = /@import\s*\(\s*"([^"]*)"\s*\)\s*([^;]*)/i;
-	const REGEXP_IMPORT_NO_QUOTES_FN = /@import\s*\(\s*([^)]*)\s*\)\s*([^;]*)/i;
+	const REGEXP_IMPORT_SIMPLE_QUOTES_FN = /@import\s*'([^']*)'\s*([^;]*)/i;
+	const REGEXP_IMPORT_DOUBLE_QUOTES_FN = /@import\s*"([^"]*)"\s*([^;]*)/i;
+	const REGEXP_IMPORT_NO_QUOTES_FN = /@import\s*([^;]*)\s*([^;]*)/i;
 
 	class DomUtil {
 		static normalizeURL(url) {