Do not use struct fd_set uninitialized (always FD_ZERO() them, before using FD_SET() on a new one, or reusing them after select()). Fixes a segfault on solaris

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@13125 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/switch_log.c

@@ -332,6 +332,7 @@ SWITCH_DECLARE(void) switch_log_vprintf(switch_text_channel_t channel, const cha
 
 			fd = fileno(handle);
 			memset(&to, 0, sizeof(to));
+			FD_ZERO(&can_write);
 			FD_SET(fd, &can_write);
 			to.tv_sec = 0;
 			to.tv_usec = 100000;