libutils: fault_mitigation.h: Fix indentation

Indentation with tab instead of space.

Fixes: ce56605 ("core: support fault mitigations in non-threaded code")
Signed-off-by: Alvin Chang <alvinga@andestech.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

lib/libutils/ext/include/fault_mitigation.h

@@ -250,7 +250,7 @@ extern struct ftmn_func_arg *__ftmn_global_func_arg;
 static inline struct ftmn_func_arg **__ftmn_get_tsd_func_arg_pp(void)
 {
 #if defined(CFG_FAULT_MITIGATION) && defined(__KERNEL__)
-    if (thread_get_id_may_fail() >= 0)
+	if (thread_get_id_may_fail() >= 0)
 		return &thread_get_tsd()->ftmn_arg;
 	else
 		return &thread_get_core_local()->ftmn_arg;