Remove gone do_backtrace() prototype and call from memory.c

git-svn-id: http://anope.svn.sourceforge.net/svnroot/anope/trunk@1957 5417fbe8-f217-4b02-8779-1006273d7864

include/extern.h

@@ -592,7 +592,6 @@ E time_t start_time;
 
 E void save_databases();
 E void expire_all();
-E void do_backtrace(int show_segheader);
 E void sighandler(int signum);
 E void do_restart_services();
 

src/memory.c

@@ -101,8 +101,7 @@ char *sstrdup(const char *src)
 		strcpy(ret, src);
 	} else {
 		alog("sstrdup() called with NULL-arg");
-		if (debug)
-			do_backtrace(0);
+		abort();
 	}
 
 	return ret;