Make SrcLangExt an enum class

Remove some more sonarcloud messages

Author: albert-github

src/docbookgen.cpp

@@ -393,7 +393,7 @@ DB_GEN_C
   m_codeGen->setSourceFileName(stripPath(fileName));
   m_pageLinks = QCString();
 
-  m_t << "<?xml version='1.0' encoding='UTF-8' standalone='no'?>\n";;
+  m_t << "<?xml version='1.0' encoding='UTF-8' standalone='no'?>\n";
   m_t << "<" << fileType << " xmlns=\"http://docbook.org/ns/docbook\" version=\"5.0\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"";
   if (!pageName.isEmpty()) m_t << " xml:id=\"_" <<  stripPath(pageName) << "\"";
   m_t << " xml:lang=\"" << theTranslator->trISOLang() << "\"";

src/htmlgen.cpp

@@ -2123,7 +2123,7 @@ void HtmlGenerator::startMemberDescription(const QCString &anchor,const QCString
   m_t << "\">";
   m_t << "<td class=\"mdescLeft\">&#160;</td>";
   if (typ) m_t << "<td class=\"mdescLeft\">&#160;</td>";
-  m_t << "<td class=\"mdescRight\">";;
+  m_t << "<td class=\"mdescRight\">";
 }
 
 void HtmlGenerator::endMemberDescription()

src/translator_sv.h

@@ -594,7 +594,7 @@ class TranslatorSwedish : public TranslatorAdapter_1_9_6
      *  of documentation blocks for enumeration types
      */
     QCString trEnumerationTypeDocumentation() override
-    { return "Dokumentation över egenuppräknande typer"; ; }
+    { return "Dokumentation över egenuppräknande typer"; }
 
     /*! This is used in the documentation of a file/namespace before the list
      *  of documentation blocks for functions

src/xmlgen.cpp

@@ -154,7 +154,7 @@ inline void writeXMLCodeString(TextStream &t,const QCString &str, size_t &col)
 
 static void writeXMLHeader(TextStream &t)
 {
-  t << "<?xml version='1.0' encoding='UTF-8' standalone='no'?>\n";;
+  t << "<?xml version='1.0' encoding='UTF-8' standalone='no'?>\n";
   t << "<doxygen xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" ";
   t << "xsi:noNamespaceSchemaLocation=\"compound.xsd\" ";
   t << "version=\"" << getDoxygenVersion() << "\" ";
@@ -872,7 +872,7 @@ static void generateXMLForMember(const MemberDef *md,TextStream &ti,TextStream &
     t << "</type>\n";
   }
 
-  QCString qualifiedNameStr = md->qualifiedName();;
+  QCString qualifiedNameStr = md->qualifiedName();
   stripAnonymousMarkers(qualifiedNameStr);
   t << "        <name>" << convertToXML(nameStr) << "</name>\n";
   if (nameStr!=qualifiedNameStr)