Fix multiple popup windows

The window was not deleted if an "already in use"-key was detected,
and a new one was created as the loop was reentered.

Create/delete of the popup are moved outside the loop.
A redrawwin() call is needed to have the window displayed again.

Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>

src/wins.c

@@ -163,6 +163,17 @@ int wins_doupdate(void)
 	return rc;
 }
 
+int wins_redrawwin(WINDOW *win)
+{
+	int rc;
+
+	SCREEN_ACQUIRE;
+	rc = redrawwin(win);
+	SCREEN_RELEASE;
+
+	return rc;
+}
+
 /* Get the current layout. */
 int wins_layout(void)
 {