fix(or_fun_call): respect MSRV for Result::unwrap_or_default suggestion (#15756)

Supersedes #14885
Fixes #14876

changelog: [`or_fun_call`]: respect MSRV for `Result::unwrap_or_default`
suggestion

r? @samueltardieu since you reviewed the original PR, but do feel free
to reroll if you're no longer interested

Author: samueltardieu

book/src/lint_configuration.md

@@ -883,6 +883,7 @@ The minimum rust version that the project supports. Defaults to the `rust-versio
 * [`needless_borrow`](https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow)
 * [`non_std_lazy_statics`](https://rust-lang.github.io/rust-clippy/master/index.html#non_std_lazy_statics)
 * [`option_as_ref_deref`](https://rust-lang.github.io/rust-clippy/master/index.html#option_as_ref_deref)
+* [`or_fun_call`](https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call)
 * [`ptr_as_ptr`](https://rust-lang.github.io/rust-clippy/master/index.html#ptr_as_ptr)
 * [`question_mark`](https://rust-lang.github.io/rust-clippy/master/index.html#question_mark)
 * [`redundant_field_names`](https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names)

clippy_config/src/conf.rs

@@ -779,6 +779,7 @@ define_Conf! {
         needless_borrow,
         non_std_lazy_statics,
         option_as_ref_deref,
+        or_fun_call,
         ptr_as_ptr,
         question_mark,
         redundant_field_names,

clippy_lints/src/methods/mod.rs

@@ -4460,7 +4460,7 @@ declare_clippy_lint! {
     /// Checks for calls to `Read::bytes` on types which don't implement `BufRead`.
     ///
     /// ### Why is this bad?
-    /// The default implementation calls `read` for each byte, which can be very inefficient for data that’s not in memory, such as `File`.
+    /// The default implementation calls `read` for each byte, which can be very inefficient for data that's not in memory, such as `File`.
     ///
     /// ### Example
     /// ```no_run
@@ -4854,7 +4854,7 @@ impl<'tcx> LateLintPass<'tcx> for Methods {
             },
             ExprKind::MethodCall(method_call, receiver, args, _) => {
                 let method_span = method_call.ident.span;
-                or_fun_call::check(cx, expr, method_span, method_call.ident.name, receiver, args);
+                or_fun_call::check(cx, expr, method_span, method_call.ident.name, receiver, args, self.msrv);
                 expect_fun_call::check(
                     cx,
                     &self.format_args,