Event loop: Fix memmove and remove extraneous declaration

common/loop.c

@@ -159,7 +159,7 @@ bool loop_remove_fd(struct loop *loop, int fd) {
 
 			loop->fd_length--;
 			memmove(&loop->fds[i], &loop->fds[i + 1],
-					sizeof(void*) * (loop->fd_length - i));
+					sizeof(struct pollfd) * (loop->fd_length - i));
 
 			return true;
 		}

include/swaybar/bar.h

@@ -9,7 +9,6 @@ struct swaybar_config;
 struct swaybar_output;
 struct swaybar_workspace;
 struct loop;
-struct loop_event;
 
 struct swaybar_pointer {
 	struct wl_pointer *pointer;