occtl: free the talloc pool on exit

This eliminates any memory leaks pointed by asan.

Signed-off-by: Nikos Mavrogiannopoulos <n.mavrogiannopoulos@gmail.com>

src/occtl/occtl.c

@@ -558,6 +558,7 @@ int main(int argc, char **argv)
 	const char *file = NULL;
 	void *gl_pool;
 	cmd_params_st params;
+	int ret;
 
 	memset(&params, 0, sizeof(params));
 
@@ -615,7 +616,9 @@ int main(int argc, char **argv)
   		}
 
   		/* handle all arguments as a command */
-		exit(single_cmd(argc, argv, gl_pool, file, &params));
+		ret = single_cmd(argc, argv, gl_pool, file, &params);
+		talloc_free(gl_pool);
+		exit(ret);
 	}
 
  interactive:
@@ -634,5 +637,6 @@ int main(int argc, char **argv)
 
 	conn_close(conn);
 
+	talloc_free(gl_pool);
 	return 0;
 }