consistently don't show sizes of empty repositories

This used to be the case, and when matching options are used, that code
path still omits them, so also omit them in the getRepoSize code path.

Command/Info.hs

@@ -654,7 +654,7 @@ cachedAllRepoData = do
  	usereposizes s = do
 		sizemap <- lift $ getRepoSizes True
 		deadset <- lift $ S.fromList <$> trustGet DeadTrusted
-		let sizemap' = M.withoutKeys sizemap deadset
+		let sizemap' = M.filter (> 0) $ M.withoutKeys sizemap deadset
 		lift $ unlessM (null <$> getUnmergedRefs)
 			warnunmerged
 		return $ s

doc/todo/git-annex_proxies.mdwn

@@ -81,6 +81,11 @@ Planned schedule of work:
   Also note that "fullybalanced=foo:2" is not currently actually
   implemented!
 
+* `git-annex info` in the limitedcalc path in cachedAllRepoData
+  double-counts redundant information from the journal due to using
+  overLocationLogs. In the other path it does not, and this should be fixed
+  for consistency and correctness.
+
 * `git-annex info` can use maxsize to display how full repositories are
 
 * implement size-based balancing, so all balanced repositories are around