chore: valueOpt ==> value?

library/Init/Lean/LocalContext.lean

@@ -41,7 +41,7 @@ def binderInfo : LocalDecl → BinderInfo
 | cdecl _ _ _ _ bi => bi
 | ldecl _ _ _ _ _  => BinderInfo.default
 
-def valueOpt : LocalDecl → Option Expr
+def value? : LocalDecl → Option Expr
 | cdecl _ _ _ _ _ => none
 | ldecl _ _ _ _ v => some v
 

library/Init/Lean/WHNF.lean

@@ -224,7 +224,7 @@ match rec.kind with
 | e@(Expr.letE _ _ _ _),    k => k e
 | e@(Expr.fvar fvarId),     k => do
   decl ← getLocalDecl fvarId;
-  match decl.valueOpt with
+  match decl.value? with
   | none   => pure e
   | some v => whnfEasyCases v k
 | e@(Expr.mvar mvarId),     k => do