Stop leaking the TUDecl.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@51575 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index 923aab2..6344ce5 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -32,6 +32,8 @@
     Types.back()->Destroy(*this);
     Types.pop_back();
   }
+
+  TUDecl->Destroy(*this);
 }
 
 void ASTContext::PrintStats() const {