Fix version= for Visual Studio 2019.

src/version.cpp

@@ -259,7 +259,7 @@ void Exiv2::dumpLibraryInfo(std::ostream& os,const exv_grep_keys_t& keys)
     size_t      edition       = (_MSC_VER-600)/100;
     const char* editions[]    = { "0","1","2","3","4","5","6","2003", "2005", "2008", "2010", "2012","2013","2015","2017","2019"};
     if (  edition == 13 && _MSC_VER >= 1910 ) edition++ ; // 2017 _MSC_VAR  == 1910
-    if (  edition == 13 && _MSC_VER >= 1920 ) edition++ ; // 2019 _MSC_VAR  == 1920
+    if (  edition == 14 && _MSC_VER >= 1920 ) edition++ ; // 2019 _MSC_VAR  == 1920
 
     if  ( edition > lengthof(editions) ) edition = 0 ;
     if  ( edition ) sprintf(version+::strlen(version)," (%s/%s)",editions[edition],bits==64?"x64":"x86");