[Minor] Compilation error with __has_attribuute operator

GCC recommands to add alternative to __has_attribute operator:

https://gcc.gnu.org/onlinedocs/cpp/_005f_005fhas_005fattribute.html

config.h.in

 #  endif
 #elif defined(__GNUC__)
 /* GCC based */
-#  if __has_attribute(__no_sanitize_address__)
-#    define RSPAMD_NO_SANITIZE __attribute__((no_sanitize_address))
+#  if defined(__has_attribute)
+#    if __has_attribute(__no_sanitize_address__)
+#      define RSPAMD_NO_SANITIZE __attribute__((no_sanitize_address))
+#    else
+#      define RSPAMD_NO_SANITIZE
+#    endif
 #  else
 #    define RSPAMD_NO_SANITIZE
 #  endif