refactor: trim popup and XIM helpers

win.c

@@ -16,8 +16,6 @@ static xcb_pixmap_t pix;
 static u32int *img;
 static int depth;
 
-extern int fontready(void);
-
 static xcb_screen_t*
 getscr(xcb_connection_t *c, int n)
 {
@@ -142,8 +140,7 @@ wininit(void)
 	mask = XCB_CW_BACK_PIXMAP;
 	xcb_change_window_attributes(conn, win, mask, &pix);
 	img = emalloc(Imgw * Imgh * sizeof(img[0]));
-	fontinit(fontdir);
-	if(!fontready()){
+	if(!fontinit(fontdir)){
 		fprint(2, "strans: popup disabled: no usable fonts\n");
 		wincleanup();
 		return 0;