[FIX]: key modifiers were cleared without a key event.

Key modifiers were incorrectly cleared when checking for an event. Now they are updated only after a key event.

Before this commit, for instance, the num lock status, along with the rest of the modifiers, was cleared when polling for a new key event. After this commit, the modifiers are not cleared without a correct update of the status, only when a new key is pressed. This aligns with the key behavior in other flavors such as wingui.

wincon/pdckbd.c

@@ -729,8 +729,6 @@ static int _process_mouse_event(void)
 
 int PDC_get_key(void)
 {
-    SP->key_modifiers = 0L;
-
     if (!key_count)
     {
         DWORD count;
@@ -752,6 +750,7 @@ int PDC_get_key(void)
         switch (save_ip.EventType)
         {
         case KEY_EVENT:
+            SP->key_modifiers = 0L;
             return _process_key_event();
 
         case MOUSE_EVENT: