!!? array indexing operator: fix typo

This is supposed to work for any `xs`, but calls `A.bounds` on `rawLines`
instead. As we only ever invoke `!!!?` with `rawLines` as `xs`, there is no
actual change in behavior (but it could be an easy pitfall in the future).

src/Ormolu/Processing/Preprocess.hs

@@ -85,7 +85,7 @@ preprocess cppEnabled region rawInput = rawSnippetsAndRegionsToFormat
     interleave [] bs = bs
     interleave (a : as) bs = a : interleave bs as
 
-    xs !!? i = if A.bounds rawLines `A.inRange` i then Just $ xs A.! i else Nothing
+    xs !!? i = if A.bounds xs `A.inRange` i then Just $ xs A.! i else Nothing
 
 -- | All lines we are not supposed to format, and a set of replacements
 -- for specific lines.