Several improvements from Doug Gregor related to default
argument handling.  I'll fix up the c89 (void) thing next.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49459 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/Expr.cpp b/lib/AST/Expr.cpp
index 0287aa0..35bea75 100644
--- a/lib/AST/Expr.cpp
+++ b/lib/AST/Expr.cpp
@@ -1021,7 +1021,8 @@
     // Accept ((void*)0) as a null pointer constant, as many other
     // implementations do.
     return PE->getSubExpr()->isNullPointerConstant(Ctx);
-  } else if (const CXXDefaultArgExpr *DefaultArg = dyn_cast<CXXDefaultArgExpr>(this)) {
+  } else if (const CXXDefaultArgExpr *DefaultArg 
+               = dyn_cast<CXXDefaultArgExpr>(this)) {
     // See through default argument expressions
     return DefaultArg->getExpr()->isNullPointerConstant(Ctx);
   }