tweaks: exclude a bit more code from a single-buffer build

src/files.c

@@ -64,26 +64,25 @@ void make_new_buffer(void)
 {
 	openfilestruct *newnode = nmalloc(sizeof(openfilestruct));
 
+#ifdef ENABLE_MULTIBUFFER
 	if (openfile == NULL) {
 		/* Make the first open file the only element in the list. */
-#ifdef ENABLE_MULTIBUFFER
 		newnode->prev = newnode;
 		newnode->next = newnode;
-#endif
+
 		firstfile = newnode;
 	} else {
 		/* Add the new open file after the current one in the list. */
-#ifdef ENABLE_MULTIBUFFER
 		newnode->prev = openfile;
 		newnode->next = openfile->next;
 		openfile->next->prev = newnode;
 		openfile->next = newnode;
-#endif
+
 		/* There is more than one file open: show "Close" in help lines. */
 		exitfunc->desc = close_tag;
 		more_than_one = !inhelp || more_than_one;
 	}
-
+#endif
 	/* Make the new buffer the current one, and start initializing it. */
 	openfile = newnode;