fix import

Author: soulomoon

ghcide/src/Development/IDE/GHC/Compat.hs

@@ -125,6 +125,9 @@ import           Compat.HieUtils
 import           Control.Applicative                     ((<|>))
 import qualified Data.ByteString                         as BS
 import           Data.Coerce                             (coerce)
+#if !MIN_VERSION_ghc(9,7,0)
+import           Data.List                               (foldl')
+#endif
 import qualified Data.Map                                as Map
 import qualified Data.Set                                as S
 import           Data.String                             (IsString (fromString))