msftedit: Explicitly load riched20 to make sure the window classes are created.

dlls/msftedit/msftedit_main.c

@@ -45,14 +45,20 @@ WINE_DEFAULT_DEBUG_CHANNEL(msftedit);
  */
 BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved)
 {
+    static const WCHAR riched20W[] = {'r','i','c','h','e','d','2','0','.','d','l','l',0};
+    static HMODULE richedit;
+
     switch(reason)
     {
     case DLL_WINE_PREATTACH:
         return FALSE; /* prefer native version */
     case DLL_PROCESS_ATTACH:
+        /* explicitly load riched20 since it creates the window classes at dll attach time */
+        richedit = LoadLibraryW( riched20W );
         DisableThreadLibraryCalls(inst);
         break;
     case DLL_PROCESS_DETACH:
+        FreeLibrary( richedit );
         break;
     }
     return TRUE;