Merge #6751

6751: Use the right `def_crate` for builtin macros r=jonas-schievink a=jonas-schievink

Fixes the incorrect macro resolution in #6716

No test, because diagnostics do not get remapped correctly for some reason. I've checked manually that this fixes the resolution errors.

bors r+

Co-authored-by: Jonas Schievink <[email protected]>

Author: bors[bot]

crates/hir_expand/src/hygiene.rs

@@ -30,7 +30,7 @@ impl Hygiene {
                     let loc = db.lookup_intern_macro(id);
                     match loc.def.kind {
                         MacroDefKind::Declarative => (loc.def.krate, loc.def.local_inner),
-                        MacroDefKind::BuiltIn(_) => (None, false),
+                        MacroDefKind::BuiltIn(_) => (loc.def.krate, false),
                         MacroDefKind::BuiltInDerive(_) => (None, false),
                         MacroDefKind::BuiltInEager(_) => (None, false),
                         MacroDefKind::ProcMacro(_) => (None, false),