tweaks: move a function to the file where it is used

src/files.c

@@ -642,6 +642,26 @@ void switch_to_next_buffer(void)
 	redecorate_after_switch();
 }
 
+/* Unlink a node from the rest of the circular list, and delete it. */
+void unlink_opennode(openfilestruct *fileptr)
+{
+	if (fileptr == startfile)
+		startfile = startfile->next;
+
+	fileptr->prev->next = fileptr->next;
+	fileptr->next->prev = fileptr->prev;
+
+	free(fileptr->filename);
+	free_lines(fileptr->filetop);
+#ifndef NANO_TINY
+	free(fileptr->current_stat);
+	free(fileptr->lock_filename);
+	/* Free the undo stack. */
+	discard_until(NULL, fileptr, TRUE);
+#endif
+	free(fileptr);
+}
+
 /* Remove the current buffer from the circular list of buffers. */
 void close_buffer(void)
 {

src/nano.c

@@ -453,28 +453,6 @@ void copy_from_buffer(linestruct *somebuffer)
 	ingraft_buffer(the_copy);
 }
 
-#ifdef ENABLE_MULTIBUFFER
-/* Unlink a node from the rest of the circular list, and delete it. */
-void unlink_opennode(openfilestruct *fileptr)
-{
-	if (fileptr == startfile)
-		startfile = startfile->next;
-
-	fileptr->prev->next = fileptr->next;
-	fileptr->next->prev = fileptr->prev;
-
-	free(fileptr->filename);
-	free_lines(fileptr->filetop);
-#ifndef NANO_TINY
-	free(fileptr->current_stat);
-	free(fileptr->lock_filename);
-	/* Free the undo stack. */
-	discard_until(NULL, fileptr, TRUE);
-#endif
-	free(fileptr);
-}
-#endif /* ENABLE_MULTIBUFFER */
-
 /* Display a warning about a key disabled in view mode. */
 void print_view_warning(void)
 {

src/proto.h

@@ -398,9 +398,6 @@ void unpartition_buffer();
 void extract(linestruct *top, size_t top_x, linestruct *bot, size_t bot_x);
 void ingraft_buffer(linestruct *somebuffer);
 void copy_from_buffer(linestruct *somebuffer);
-#ifdef ENABLE_MULTIBUFFER
-void unlink_opennode(openfilestruct *fileptr);
-#endif
 void print_view_warning(void);
 void show_restricted_warning(void);
 #ifndef ENABLE_HELP