Fix Autogen-modules issue in cabal file

Author: jaspervdj

stylish-haskell.cabal

@@ -57,6 +57,9 @@ Library
     Language.Haskell.Stylish.Verbose
     Paths_stylish_haskell
 
+  Autogen-modules:
+    Paths_stylish_haskell
+
   Build-depends:
     aeson            >= 0.6    && < 1.6,
     base             >= 4.8    && < 5,
@@ -150,6 +153,9 @@ Test-suite stylish-haskell-tests
     Language.Haskell.Stylish.Verbose
     Paths_stylish_haskell
 
+  Autogen-modules:
+    Paths_stylish_haskell
+
   Build-depends:
     HUnit                >= 1.2 && < 1.7,
     test-framework       >= 0.4 && < 0.9,