Give precedence to primitives over modules

This has less surprising behavior when there is a module with the same
name as a primitive in scope.

src/librustdoc/passes/collect_intra_doc_links.rs

@@ -217,9 +217,11 @@ impl<'a, 'tcx> LinkCollector<'a, 'tcx> {
                         return Ok((res, Some(path_str.to_owned())));
                     }
                     Res::Def(DefKind::Mod, _) => {
-                        // This resolved to a module, but if we were passed `type@`,
-                        // we want primitive types to take precedence instead.
-                        if disambiguator == Some(Disambiguator::Namespace(Namespace::TypeNS)) {
+                        // This resolved to a module, but we want primitive types to take precedence instead.
+                        if matches!(
+                            disambiguator,
+                            None | Some(Disambiguator::Namespace(Namespace::TypeNS))
+                        ) {
                             if let Some(prim) = is_primitive(path_str, ns) {
                                 if extra_fragment.is_some() {
                                     return Err(ErrorKind::AnchorFailure(AnchorFailure::Primitive));

src/test/rustdoc/intra-link-prim-precedence.rs

@@ -8,5 +8,10 @@ pub mod char {}
 pub struct MyString;
 
 /// See also [char]
-// @has intra_link_prim_precedence/struct.MyString2.html '//a/@href' 'intra_link_prim_precedence/char/index.html'
+// @has intra_link_prim_precedence/struct.MyString2.html '//a/@href' 'https://doc.rust-lang.org/nightly/std/primitive.char.html'
 pub struct MyString2;
+
+/// See also [crate::char] and [mod@char]
+// @has intra_link_prim_precedence/struct.MyString3.html '//*[@href="../intra_link_prim_precedence/char/index.html"]' 'crate::char'
+// @has - '//*[@href="../intra_link_prim_precedence/char/index.html"]' 'mod@char'
+pub struct MyString3;