stow_funcs.sh: don't error with metapkgs while removing.

--HG--
extra : convert_revision : 04d1f2fe6e9bc962f62b93f9b4bd6d566c759e07

utils/sh/stow_funcs.sh

@@ -100,8 +100,7 @@ unstow_pkg()
 		msg_error "$pkg is incomplete, missing flist."
 	elif [ ! -w flist ]; then
 		msg_error "$pkg cannot be removed (permission denied)."
-	fi
-
+	elif [ -s flist ]; then
 		# Remove installed files.
 		for f in $(cat flist); do
 			if [ -f $XBPS_MASTERDIR/$f -o -h $XBPS_MASTERDIR/$f ]; then
@@ -120,6 +119,7 @@ unstow_pkg()
 				fi
 			fi
 		done
+	fi
 
 	# Remove metadata dir.
 	rm -rf $XBPS_PKGMETADIR/$pkgname