Fix uninitialized value bug discovered buy msan buildbot.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191292 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/ModuleMap.cpp b/lib/Lex/ModuleMap.cpp
index 0f12af3..a10679a 100644
--- a/lib/Lex/ModuleMap.cpp
+++ b/lib/Lex/ModuleMap.cpp
@@ -87,7 +87,7 @@
const LangOptions &LangOpts, const TargetInfo *Target,
HeaderSearch &HeaderInfo)
: LangOpts(LangOpts), Target(Target), HeaderInfo(HeaderInfo),
- BuiltinIncludeDir(0), CompilingModule(0)
+ BuiltinIncludeDir(0), CompilingModule(0), SourceModule(0)
{
IntrusiveRefCntPtr<DiagnosticIDs> DiagIDs(new DiagnosticIDs);
Diags = IntrusiveRefCntPtr<DiagnosticsEngine>(