[clang] Make header self-contained. NFC.

d0k · AlexisPerry · commit f456f8b80c8a · 2024-06-27T15:52:59.000-06:00
diff --git a/clang/include/clang/Basic/Thunk.h b/clang/include/clang/Basic/Thunk.h
@@ -21,6 +21,7 @@
 namespace clang {
 
 class CXXMethodDecl;
+class Type;
 
 /// A return adjustment.
 struct ReturnAdjustment {
