[stats] fix up non-linux unix compilation

src/lib/notcurses.c

@@ -285,6 +285,8 @@ int update_term_dimensions(unsigned* rows, unsigned* cols, tinfo* tcache,
   if(tcache->linux_fb_fd >= 0){
     get_linux_fb_pixelgeom(tcache, &tcache->pixy, &tcache->pixx);
   }else{
+#else
+  {
 #endif
     // we might have the pixel geometry from CSI14t, so don't override a valid
     // earlier response with 0s from the ioctl. we do want to fire off a fresh