Bugfix: Fix error handler memory leak (#467)

Fixes memory leak when multiple error handlers are attached. Fixes #446

---------

Co-authored-by: David Gardner <gardner48@llnl.gov>

CHANGELOG.md

@@ -28,6 +28,8 @@ Added support for Kokkos Kernels v4.
 
 Fixed a bug that caused error messages to be cut off in some cases. Fixes [GitHub Issue #461](https://github.com/LLNL/sundials/issues/461).
 
+Fixed a memory leak when an error handler was added to a `SUNContext`. Fixes [GitHub Issue #466](https://github.com/LLNL/sundials/issues/466).
+
 ## Changes to SUNDIALS in release v7.0.0
 
 ### Major Feature

doc/shared/RecentChanges.rst

@@ -26,3 +26,6 @@ produced from evolving the inner stepper.
 Added support for Kokkos Kernels v4.
 
 Fixed a bug that caused error messages to be cut off in some cases. Fixes `GitHub Issue #461 <https://github.com/LLNL/sundials/issues/461>`_.
+
+Fixed a memory leak when an error handler was added to a :c:type:`SUNContext`. Fixes `GitHub Issue #466 <https://github.com/LLNL/sundials/issues/466>`_.
+

src/sundials/sundials_context.c

@@ -285,7 +285,7 @@ SUNErrCode SUNContext_Free(SUNContext* sunctx)
     SUNLogger_Destroy(&(*sunctx)->logger);
   }
 
-  SUNErrHandler_Destroy(&(*sunctx)->err_handler);
+  SUNContext_ClearErrHandlers(*sunctx);
 
   free(*sunctx);
   *sunctx = NULL;