SL-10153: auto name{expression} declares an initializer_list

instead of a variable of type decltype(expression).

Using SHGetKnownFolderPath(FOLDERID_Fonts) in LLFontGL::getFontPathSystem()
requires new Windows #include files.

A variable with a constructor can't be declared within the braces of a switch
statement, even outside any of its case clauses.

indra/llcommon/llstring.h

@@ -1755,7 +1755,7 @@ bool LLStringUtilBase<T>::endsWith(
 template<class T>
 auto LLStringUtilBase<T>::getoptenv(const std::string& key) -> boost::optional<string_type>
 {
-    auto found{llstring_getoptenv(key)};
+    auto found(llstring_getoptenv(key));
     if (found)
     {
         // return populated boost::optional
@@ -1772,7 +1772,7 @@ auto LLStringUtilBase<T>::getoptenv(const std::string& key) -> boost::optional<s
 template<class T>
 auto LLStringUtilBase<T>::getenv(const std::string& key, const string_type& dflt) -> string_type
 {
-    auto found{getoptenv(key)};
+    auto found(getoptenv(key));
     if (found)
     {
         return *found;

indra/llrender/llfontgl.cpp

@@ -44,6 +44,12 @@
 // Third party library includes
 #include <boost/tokenizer.hpp>
 
+#if LL_WINDOWS
+#include <Shlobj.h>
+#include <Knownfolders.h>
+#include <Objbase.h>
+#endif // LL_WINDOWS
+
 const S32 BOLD_OFFSET = 1;
 
 // static class members

indra/llvfs/lldir_win32.cpp

@@ -53,16 +53,16 @@ namespace
     std::ofstream* prelogf = nullptr;
 
     void prelog(const std::string& message)
-    {
-        switch (state)
     {
         boost::optional<std::string> prelog_name;
 
+        switch (state)
+        {
         case prst::INIT:
             // assume we failed, until we succeed
             state = prst::SKIP;
 
-            prelog_name = LLDirUtil::getoptenv("PRELOG");
+            prelog_name = LLStringUtil::getoptenv("PRELOG");
             if (! prelog_name)
                 // no PRELOG variable set, carry on
                 return;