Replace last with unsnoc to fix hlint error

Author: jian-lin

plugins/hls-eval-plugin/src/Ide/Plugin/Eval/Handlers.hs

@@ -34,7 +34,8 @@ import           Data.Foldable                                (toList)
 import           Data.List                                    (dropWhileEnd,
                                                                find,
                                                                intercalate,
-                                                               intersperse)
+                                                               intersperse,
+                                                               unsnoc)
 import qualified Data.Map                                     as Map
 import           Data.Maybe                                   (catMaybes)
 import           Data.String                                  (IsString)
@@ -317,7 +318,7 @@ finalReturn :: Text -> TextEdit
 finalReturn txt =
     let ls = T.lines txt
         l = fromIntegral $ length ls -1
-        c = fromIntegral $ T.length . last $ ls
+        c = fromIntegral $ T.length $ maybe T.empty snd (unsnoc ls)
         p = Position l c
      in TextEdit (Range p p) "\n"