ClangImporter: adjust for SVN r349901

The constructor for `DeclRefExpr` now takes a `Context` parameter to avoid the
call to `getASTContext`.  Adjust the invocation accordingly.

Author: compnerd

lib/ClangImporter/ImportDecl.cpp

@@ -1037,7 +1037,7 @@ makeBitFieldAccessors(ClangImporter::Implementation &Impl,
                                                   nullptr);
     cGetterDecl->setParams(cGetterSelf);
 
-    auto cGetterSelfExpr = new (Ctx) clang::DeclRefExpr(cGetterSelf, false,
+    auto cGetterSelfExpr = new (Ctx) clang::DeclRefExpr(Ctx, cGetterSelf, false,
                                                         recordType,
                                                         clang::VK_RValue,
                                                         clang::SourceLocation());
@@ -1083,7 +1083,7 @@ makeBitFieldAccessors(ClangImporter::Implementation &Impl,
     cSetterParams.push_back(cSetterSelf);
     cSetterDecl->setParams(cSetterParams);
 
-    auto cSetterSelfExpr = new (Ctx) clang::DeclRefExpr(cSetterSelf, false,
+    auto cSetterSelfExpr = new (Ctx) clang::DeclRefExpr(Ctx, cSetterSelf, false,
                                                         recordPointerType,
                                                         clang::VK_RValue,
                                                         clang::SourceLocation());
@@ -1097,7 +1097,7 @@ makeBitFieldAccessors(ClangImporter::Implementation &Impl,
                                                          clang::VK_LValue,
                                                          clang::OK_BitField);
 
-    auto cSetterValueExpr = new (Ctx) clang::DeclRefExpr(cSetterValue, false,
+    auto cSetterValueExpr = new (Ctx) clang::DeclRefExpr(Ctx, cSetterValue, false,
                                                          fieldType,
                                                          clang::VK_RValue,
                                                          clang::SourceLocation());