Allow explicit ctors for casts.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@80374 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaCXXCast.cpp b/lib/Sema/SemaCXXCast.cpp
index 9c27bf6..52ebdef 100644
--- a/lib/Sema/SemaCXXCast.cpp
+++ b/lib/Sema/SemaCXXCast.cpp
@@ -784,7 +784,7 @@
   ImplicitConversionSequence ICS = 
     Self.TryImplicitConversion(SrcExpr, DestType,
                                /*SuppressUserConversions=*/false,
-                               /*AllowExplicit=*/false,
+                               /*AllowExplicit=*/true,
                                /*ForceRValue=*/false,
                                /*InOverloadResolution=*/false);