Minor coding style fix. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@375478 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Sema/SemaLambda.cpp

@@ -444,7 +444,8 @@ void Sema::handleLambdaNumbering(
   }
 
   auto getMangleNumberingContext =
-      [this](CXXRecordDecl *Class, Decl *ManglingContextDecl) -> MangleNumberingContext * {
+      [this](CXXRecordDecl *Class,
+             Decl *ManglingContextDecl) -> MangleNumberingContext * {
     // Get mangle numbering context if there's any extra decl context.
     if (ManglingContextDecl)
       return &Context.getManglingNumberContext(