Uninstalls LogManager handlers on shutdown

In case something manages to have stayed alive and tried throwing a
message, this will no longer crash.

Noticed this with the previous commit

External/FEXCore/Source/Utils/LogManager.cpp

@@ -7,6 +7,7 @@ namespace LogMan {
 namespace Throw {
 std::vector<ThrowHandler> Handlers;
 void InstallHandler(ThrowHandler Handler) { Handlers.emplace_back(Handler); }
+void UnInstallHandlers() { Handlers.clear(); }
 
 [[noreturn]] void M(const char *fmt, va_list args) {
   size_t MsgSize = 1024;
@@ -30,6 +31,7 @@ void InstallHandler(ThrowHandler Handler) { Handlers.emplace_back(Handler); }
 namespace Msg {
 std::vector<MsgHandler> Handlers;
 void InstallHandler(MsgHandler Handler) { Handlers.emplace_back(Handler); }
+void UnInstallHandlers() { Handlers.clear(); }
 
 void M(DebugLevels Level, const char *fmt, va_list args) {
   size_t MsgSize = 1024;

External/FEXCore/include/FEXCore/Utils/LogManager.h

@@ -19,6 +19,7 @@ constexpr DebugLevels MSG_LEVEL = INFO;
 namespace Throw {
 using ThrowHandler = void(*)(char const *Message);
 void InstallHandler(ThrowHandler Handler);
+void UnInstallHandlers();
 
 [[noreturn]] void M(const char *fmt, va_list args);
 
@@ -40,6 +41,7 @@ static inline void A(bool, const char*, ...) {}
 namespace Msg {
 using MsgHandler = void(*)(DebugLevels Level, char const *Message);
 void InstallHandler(MsgHandler Handler);
+void UnInstallHandlers();
 
 void M(DebugLevels Level, const char *fmt, va_list args);
 

Source/Tests/ELFLoader.cpp

@@ -283,6 +283,9 @@ int main(int argc, char **argv, char **const envp) {
 
   FEXCore::Config::Shutdown();
 
+  LogMan::Throw::UnInstallHandlers();
+  LogMan::Msg::UnInstallHandlers();
+
   if (OutputFD != stderr &&
       OutputFD != stdout &&
       OutputFD != nullptr) {