For unresolved macros, hightlight only the last segment

crates/hir/src/diagnostics.rs

@@ -1,5 +1,7 @@
 //! FIXME: write short doc here
-pub use hir_def::diagnostics::{InactiveCode, UnresolvedModule, UnresolvedProcMacro};
+pub use hir_def::diagnostics::{
+    InactiveCode, UnresolvedMacroCall, UnresolvedModule, UnresolvedProcMacro,
+};
 pub use hir_expand::diagnostics::{
     Diagnostic, DiagnosticCode, DiagnosticSink, DiagnosticSinkBuilder,
 };