[ASTImporter] Fix in ASTImporter::Import_New(const Decl *)

Make sure ASTImporter::Import_New(const Decl *) returns
a Expected<const Decl *> and not Expected<Decl *> to
make the clang/unittests/AST/ASTImporterTest.cpp compile
without the warning

 clang/unittests/AST/ASTImporterTest.cpp:117:12: error: no viable conversion from 'Expected<clang::Decl *>' to 'Expected<const clang::Decl *>'
    return Imported;

(I got the above when building with clang 3.6).

llvm-svn: 357985

diff --git a/clang/include/clang/AST/ASTImporter.h b/clang/include/clang/AST/ASTImporter.h
index 8c73db0..a492573 100644 (file)
--- a/clang/include/clang/AST/ASTImporter.h
+++ b/clang/include/clang/AST/ASTImporter.h
@@ -215,7 +215,7 @@ class TypeSourceInfo;
     /// \returns The equivalent declaration in the "to" context, or the import
     /// error.
     llvm::Expected<Decl *> Import_New(Decl *FromD);
-    llvm::Expected<Decl *> Import_New(const Decl *FromD) {
+    llvm::Expected<const Decl *> Import_New(const Decl *FromD) {
       return Import_New(const_cast<Decl *>(FromD));
     }
     // FIXME: Remove this version.