Internals: Remove some unnecessary typedefs. No functional change.

src/V3FileLine.cpp

@@ -71,7 +71,7 @@ int FileLineSingleton::nameToNumber(const string& filename) {
 //! Experimental. Updated to also put out the language.
 void FileLineSingleton::fileNameNumMapDumpXml(std::ostream& os) {
     os << "<files>\n";
-    for (FileNameNumMap::const_iterator it = m_namemap.begin(); it != m_namemap.end(); ++it) {
+    for (auto it = m_namemap.cbegin(); it != m_namemap.cend(); ++it) {
         os << "<file id=\"" << filenameLetters(it->second) << "\" filename=\""
            << V3OutFormatter::quoteNameControls(it->first, V3OutFormatter::LA_XML)
            << "\" language=\"" << numberToLang(it->second).ascii() << "\"/>\n";
@@ -427,8 +427,7 @@ string FileLine::warnContext(bool secondary) const {
 }
 
 #ifdef VL_LEAK_CHECKS
-typedef std::unordered_set<FileLine*> FileLineCheckSet;
-FileLineCheckSet fileLineLeakChecks;
+std::unordered_set<FileLine*> fileLineLeakChecks;
 
 void* FileLine::operator new(size_t size) {
     FileLine* objp = static_cast<FileLine*>(::operator new(size));