win32/except: workaround for mingw and std::invoke

win32/except.hpp

@@ -29,9 +29,13 @@ namespace cruft::win32 {
         static decltype(auto)
         try_call (FunctionT &&func, ArgsT &&...args)
         {
+            // GCC#9.1.0: We'd like to use std::invoke here, but mingw has a
+            // spotty record of actually supplying this functionality.
+            //
+            // It's almost certain that we'll be calling C functions, so
+            // pretend that's what we received for the time being.
             return try_value (
-                std::invoke (
-                    std::forward<FunctionT> (func),
+                func (
                     std::forward<ArgsT> (args)...
                 )
             );