From: Robert Lipe <robertlipe@gpsbabel.org>
Date: Thu, 14 Feb 2019 20:34:25 +0000 (-0600)
Subject: Essentially revert the skytraq part of PR#286.
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Essentially revert the skytraq part of PR#286.
---

diff --git a/skytraq.cc b/skytraq.cc
index a178a5d93..913262a31 100644
--- a/skytraq.cc
+++ b/skytraq.cc
@@ -271,9 +271,9 @@ skytraq_calc_checksum(const unsigned char* buf, int len)
 static int
 skytraq_rd_msg(const void* payload, unsigned int len)
 {
-  int errors = 5;		/* allow this many errors */
+  int errors = 5;		// Allow this many receiver errors silently.
   unsigned int c, i, state;
-  signed int rcv_len;
+  signed int rcv_len;		// Negative length is read error.
 
   for (i = 0, state = 0; i < RETRIES && state < sizeof(MSG_START); i++) {
     c = rd_char(&errors);