Warnings cleanup patch from Jean-Daniel Dupas.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@109226 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Host/macosx/cfcpp/CFCMutableSet.cpp b/source/Host/macosx/cfcpp/CFCMutableSet.cpp
index cd25370..afc09e1 100644
--- a/source/Host/macosx/cfcpp/CFCMutableSet.cpp
+++ b/source/Host/macosx/cfcpp/CFCMutableSet.cpp
@@ -84,7 +84,7 @@
     if (set == NULL)
     {
         if (can_create == false)
-            return false;
+            return NULL;
         set = ::CFSetCreateMutable(kCFAllocatorDefault, 0, &kCFTypeSetCallBacks);
         reset ( set );
     }