Eliminate the default value for the UserCast parameter of Sema::IsUserDefinedConversion. No functionality change

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101482 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index 9c09039..ea18c3d 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -1093,7 +1093,7 @@
                                OverloadCandidateSet& Conversions,
                                bool AllowConversionFunctions,
                                bool AllowExplicit, bool ForceRValue,
-                               bool UserCast = false);
+                               bool UserCast);
   bool DiagnoseMultipleUserDefinedConversion(Expr *From, QualType ToType);