minor cleanups

mergeFrom is never called on branches that don't exist anymore

Command/Sync.hs

@@ -86,7 +86,7 @@ mergeLocal branch = go =<< needmerge
 		go False = stop
 		go True = do
 			showStart "merge" $ Git.Ref.describe syncbranch
-			next $ next $ mergeFromIfExists syncbranch
+			next $ next $ mergeFrom syncbranch
 
 pushLocal :: Git.Ref -> CommandStart
 pushLocal branch = go =<< inRepo (Git.Ref.exists syncbranch)
@@ -106,17 +106,10 @@ updateBranch syncbranch =
 			, Param $ show $ Git.Ref.base syncbranch
 			]
 
-mergeFromIfExists :: Git.Ref -> CommandCleanup
-mergeFromIfExists branch = go =<< inRepo (Git.Ref.exists branch)
-	where
-		go True = do
-			showOutput
-			inRepo $ Git.Command.runBool "merge"
-				[Param (show branch)]
-		go False = do
-			showNote $ Git.Ref.describe branch ++
-				" does not exist, not merging"
-			return False
+mergeFrom :: Git.Ref -> CommandCleanup
+mergeFrom branch = do
+	showOutput
+	inRepo $ Git.Command.runBool "merge" [Param $ show branch]
 
 pullRemote :: Remote.Remote Annex -> Git.Ref -> CommandStart
 pullRemote remote branch = do
@@ -134,14 +127,15 @@ pullRemote remote branch = do
  - were committed, while the synced/master may have changes that some
  - other remote synced to this remote. So, merge them both. -}
 mergeRemote :: Remote.Remote Annex -> Git.Ref -> CommandCleanup
-mergeRemote remote branch = all (== True) <$> mapM go [branch, syncBranch branch]
+mergeRemote remote branch = all id <$> mapM go [branch, syncBranch branch]
 	where
 		go b = do
 			e <- inRepo $ Git.Branch.changed branch b
 			if e
-				then mergeFromIfExists $ remotebranch b
+				then mergeFrom $ remotebranch b
 				else return True
-		remotebranch = Git.Ref.under $ "refs/remotes/" ++ Remote.name remote
+		remotebranch = Git.Ref.under $
+			"refs/remotes/" ++ Remote.name remote
 
 pushRemote :: Remote.Remote Annex -> Git.Ref -> CommandStart
 pushRemote remote branch = go =<< needpush