Initialize WarnOnSpellCheck.

Clang always calls setWarnOnSpellCheck, but we shouldn't require every client to
do so.

Issue noticed by Enea Zaffanella.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181021 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/Basic/Diagnostic.cpp b/lib/Basic/Diagnostic.cpp
index 842bacb9a5..4a5b191aab 100644
--- a/lib/Basic/Diagnostic.cpp
+++ b/lib/Basic/Diagnostic.cpp
@@ -48,6 +48,7 @@ DiagnosticsEngine::DiagnosticsEngine(
   AllExtensionsSilenced = 0;
   IgnoreAllWarnings = false;
   WarningsAsErrors = false;
+  WarnOnSpellCheck = false;
   EnableAllWarnings = false;
   ErrorsAsFatal = false;
   SuppressSystemWarnings = false;