Bug 5988 - record append option not working

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.2@7523 65c4cc65-6c06-0410-ace0-fbb531ad65f3

file.c

@@ -955,6 +955,8 @@ struct ast_filestream *ast_writefile(const char *filename, const char *type, con
 					fs->filename = strdup(filename);
 				}
 				fs->vfs = NULL;
+				/* If truncated, we'll be at the beginning; if not truncated, then append */
+				f->seek(fs, 0, SEEK_END);
 			} else {
 				ast_log(LOG_WARNING, "Unable to rewrite %s\n", fn);
 				close(fd);