fix:mdx compact html ,the end close tag error

some mdx entry item has such item
`1`abc.jpg\r\n\u0000
when replaced with predefined tags. will result in
<a href="abc.jpg\r\n\u0000">****

mdictparser.cc

@@ -40,6 +40,7 @@
 #include "decompress.hh"
 #include "gddebug.hh"
 #include "ripemd.hh"
+#include "utils.hh"
 
 namespace Mdict
 {
@@ -183,8 +184,6 @@ QString MdictParser::toUtf16( const char * fromCode, const char * from, size_t f
   if ( !fromCode || !from )
     return QString();
 
-
-
   QTextCodec *codec =QTextCodec::codecForName(fromCode);
   return codec->toUnicode(from,fromSize);
 }
@@ -647,7 +646,7 @@ QString & MdictParser::substituteStylesheet( QString & article, MdictParser::Sty
   }
   if( pos )
   {
-    articleNewText += article.mid( pos );
+    articleNewText += Utils::rstripnull( article.mid( pos ));
     article = articleNewText;
     articleNewText.clear();
   }

utils.hh

@@ -26,6 +26,22 @@ inline QString rstrip(const QString &str) {
   return "";
 }
 
+/**
+ * str="abc\r\n\u0000" should be returned as "abc"
+ * @brief rstripnull
+ * @param str
+ * @return
+ */
+inline QString rstripnull(const QString &str) {
+  int n = str.size() - 1;
+  for (; n >= 0; --n) {
+    if (!str.at(n).isSpace()&&!str.at(n).isNull()) {
+      return str.left(n + 1);
+    }
+  }
+  return "";
+}
+
 inline bool isExternalLink(QUrl const &url) {
   return url.scheme() == "http" || url.scheme() == "https" ||
          url.scheme() == "ftp" || url.scheme() == "mailto" ||