Support Launch when BindAddress is not INADDR_ANY or localhost. Also fix a possible buffer overflow

Originally committed as revision 4692 to svn://svn.ffmpeg.org/ffmpeg/trunk

ffserver.c

@@ -3868,7 +3868,10 @@ static int parse_ffconfig(const char *filename)
 
                 feed->child_argv[i] = av_malloc(30 + strlen(feed->filename));
 
-                snprintf(feed->child_argv[i], 256, "http://127.0.0.1:%d/%s", 
+		snprintf(feed->child_argv[i], 30+strlen(feed->filename),
+		    "http://%s:%d/%s", 
+            	    (my_http_addr.sin_addr.s_addr == INADDR_ANY) ? "127.0.0.1" :
+		    inet_ntoa(my_http_addr.sin_addr),
 		    ntohs(my_http_addr.sin_port), feed->filename);
             }
         } else if (!strcasecmp(cmd, "ReadOnlyFile")) {