[gcc r14-3636] diagnostics: Delete config pointer before overwriting it

[Mikael Morin]

https://gcc.gnu.org/g:474473f0425b404cd3ce15e73844de4608ac4ba7

commit r14-3636-g474473f0425b404cd3ce15e73844de4608ac4ba7
Author: Mikael Morin <mikael@gcc.gnu.org>
Date:   Sat Sep 2 12:55:25 2023 +0200

    diagnostics: Delete config pointer before overwriting it
    
    Delete m_client_data_hooks before it is reassigned in
    tree_diagnostics_defaults.  This fixes a small memory leak in the fortran
    frontend, which restores the diagnostics configurations to their default
    values with a call to tree_diagnostics_defaults at the end of the main parse
    hook.
    
    gcc/ChangeLog:
    
            * tree-diagnostic.cc (tree_diagnostics_defaults): Delete allocated
            pointer before overwriting it.

Diff:
---
 gcc/tree-diagnostic.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gcc/tree-diagnostic.cc b/gcc/tree-diagnostic.cc
index 731e3559cd81..d2f6637b6d95 100644
--- a/gcc/tree-diagnostic.cc
+++ b/gcc/tree-diagnostic.cc
@@ -377,5 +377,6 @@ tree_diagnostics_defaults (diagnostic_context *context)
   context->print_path = default_tree_diagnostic_path_printer;
   context->make_json_for_path = default_tree_make_json_for_path;
   context->set_locations_cb = set_inlining_locations;
+  delete context->m_client_data_hooks;
   context->m_client_data_hooks = make_compiler_data_hooks ();
 }