Make ObjCInterfaceDecl's const in some more places.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69775 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGObjCGNU.cpp b/lib/CodeGen/CGObjCGNU.cpp
index 167e337..a1bc9b7 100644
--- a/lib/CodeGen/CGObjCGNU.cpp
+++ b/lib/CodeGen/CGObjCGNU.cpp
@@ -148,7 +148,7 @@
                                       const ObjCIvarDecl *Ivar,
                                       unsigned CVRQualifiers);
   virtual llvm::Value *EmitIvarOffset(CodeGen::CodeGenFunction &CGF,
-                                      ObjCInterfaceDecl *Interface,
+                                      const ObjCInterfaceDecl *Interface,
                                       const ObjCIvarDecl *Ivar);
 };
 } // end anonymous namespace
@@ -1096,7 +1096,7 @@
 }
 
 llvm::Value *CGObjCGNU::EmitIvarOffset(CodeGen::CodeGenFunction &CGF,
-                         ObjCInterfaceDecl *Interface,
+                         const ObjCInterfaceDecl *Interface,
                          const ObjCIvarDecl *Ivar) {
   const llvm::Type *InterfaceLTy =
     CGM.getTypes().ConvertType(