Don't keep NumSelectorArgs in the ObjCMethodDecl, the number can be derived from the selector.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140983 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ASTImporter.cpp b/lib/AST/ASTImporter.cpp
index 55610cb..09151a7 100644
--- a/lib/AST/ASTImporter.cpp
+++ b/lib/AST/ASTImporter.cpp
@@ -2955,8 +2955,7 @@
     ToMethod->addDecl(ToParams[I]);
   }
   ToMethod->setMethodParams(Importer.getToContext(), 
-                            ToParams.data(), ToParams.size(),
-                            ToParams.size());
+                            ToParams.data(), ToParams.size());
 
   ToMethod->setLexicalDeclContext(LexicalDC);
   Importer.Imported(D, ToMethod);