Fix postingCleared for individually-cleared postings

The previous code simply looked directly to the parent transaction's
status to determine whether the posting was cleared. This gave
erroneous information for postings that were individually cleared
even though the parent transaction was not cleared.

hledger-lib/Hledger/Data/Posting.hs

@@ -74,8 +74,14 @@ sumPostings = sumMixedAmountsPreservingHighestPrecision . map pamount
 postingDate :: Posting -> Day
 postingDate p = maybe nulldate tdate $ ptransaction p
 
+-- |Is this posting cleared? If this posting was individually marked
+-- as cleared, returns True. Otherwise, return the parent
+-- transaction's cleared status or, if there is no parent
+-- transaction, return False.
 postingCleared :: Posting -> Bool
-postingCleared p = maybe False tstatus $ ptransaction p
+postingCleared p = if pstatus p
+                    then True
+                    else maybe False tstatus $ ptransaction p
 
 -- | Does this posting fall within the given date span ?
 isPostingInDateSpan :: DateSpan -> Posting -> Bool