Use BB_FEATURE_CLEAN_UP where appropriate

-Erik

util-linux/mount.c

@@ -347,9 +347,9 @@ extern int mount_main(int argc, char **argv)
 					mntentlist[i].mnt_opts, mntentlist[i].mnt_freq, 
 					mntentlist[i].mnt_passno);
 		}
+#ifdef BB_FEATURE_CLEAN_UP
 		/* Don't bother to close files or free memory.  Exit 
 		 * does that automagically, so we can save a few bytes */
-#if 0
 		free( mntentlist);
 		close(fd);
 #endif