Fix MIC-E comment when device id is missing.

Author: wb2osz

src/deviceid.c

@@ -568,16 +568,18 @@ void deviceid_decode_dest (char *dest, char *device, size_t device_size)
  *
  * Inputs:	comment - MIC-E comment that might have vendor/model encoded as
  *			a prefix and/or suffix.
+ *			Any trailing CR has already been removed.
  *
  *		trimmed_size - Amount of space available for result to avoid buffer overflow.
  *
  *		device_size - Amount of space available for result to avoid buffer overflow.
  *
  * Outputs:	trimmed - Final comment with device vendor/model removed.
+ *				This would include any altitude.
  *
  *		device	- Vendor and model.
  *
- * Description:	This has a tortured history.
+ * Description:	MIC-E device identification has a tortured history.
  *
  *		The Kenwood TH-D7A  put ">" at the beginning of the comment.
  *		The Kenwood TM-D700 put "]" at the beginning of the comment.
@@ -593,7 +595,9 @@ void deviceid_decode_dest (char *dest, char *device, size_t device_size)
  *
  * References:	http://www.aprs.org/aprs12/mic-e-types.txt
  *		http://www.aprs.org/aprs12/mic-e-examples.txt
- *
+ *		https://github.com/wb2osz/aprsspec containing:
+ *			APRS Protocol Specification 1.2
+ *			Understanding APRS Packets
  *------------------------------------------------------------------*/
 
 // The strncmp documentation doesn't mention behavior if length is zero.
@@ -612,6 +616,10 @@ static inline int strncmp_z (char *a, char *b, size_t len)
 void deviceid_decode_mice (char *comment, char *trimmed, size_t trimmed_size, char *device, size_t device_size)
 {
 	strlcpy (device, "UNKNOWN vendor/model", device_size);
+	strlcpy (trimmed, comment, sizeof(trimmed));
+	if (strlen(comment) < 1) {
+	  return;
+	}
 
 	if (ptocalls == NULL) {
 	  text_color_set(DW_COLOR_ERROR);
@@ -663,6 +671,7 @@ void deviceid_decode_mice (char *comment, char *trimmed, size_t trimmed_size, ch
 // Not found.
 
 	strlcpy (device, "UNKNOWN vendor/model", device_size);
+	strlcpy (trimmed, comment, sizeof(trimmed));
 
 } // end deviceid_decode_mice