Commits on Jun 10, 2024

1. [CoreFoundation] Fix memory leak in CFProxySupport. …

   The Xcode 16 release notes have this note:
   
       CFNetwork Resolved Issues
   
       * Fixed: CFNetworkExecuteProxyAutoConfigurationScript and
         CFNetworkExecuteProxyAutoConfigurationURL have always returned a +1
         retained CF type object, but the function declarations were not
         decorated with the CF_RETURNS_RETAINED attribute until iOS 18, macOS 15,
         tvOS 18, and visionOS 2.
   
         For C-based languages, the clang static analyzer might note if the
         object is leaked. No source code changes are required, but they are
         encouraged to fix the leak.
   
         For Swift, this changes the return type of these functions from
         Unmanaged<> to the actual CF type returned, which will require a source
         change to fix when compiling with newer SDKs. However, Swift programs
         compiled with older SDKs will continue to work on the new OSes, though
         the returned CF type object will continue to leak as it did prior to
         this change. (126154509)
   
   So update our code accordingly to take into account that
   CFNetworkExecuteProxyAutoConfigurationScript and
   CFNetworkExecuteProxyAutoConfigurationURL return retained objects.

   

   rolfbjarne committed Jun 10, 2024
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