Merge branch 'rs/column-leakfix' into maint-2.43

Leakfix.

* rs/column-leakfix:
  column: release strbuf and string_list after use

builtin/column.c

@@ -56,5 +56,7 @@ int cmd_column(int argc, const char **argv, const char *prefix)
 		string_list_append(&list, sb.buf);
 
 	print_columns(&list, colopts, &copts);
+	strbuf_release(&sb);
+	string_list_clear(&list, 0);
 	return 0;
 }

t/t9002-column.sh

@@ -1,6 +1,7 @@
 #!/bin/sh
 
 test_description='git column'
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success 'setup' '