Change include guard name

src/util_backtrace.h

@@ -8,8 +8,8 @@
 // See LICENSES/ for license information
 // SPDX-License-Identifier: BSD-3-Clause
 // ---------------------------------------------------------------
-#ifndef STACKTRACE_H_INCLUDED_
-#define STACKTRACE_H_INCLUDED_
+#ifndef UTIL_BACKTRACE_H
+#define UTIL_BACKTRACE_H
 
 #ifdef __cplusplus
 extern "C" {