Don't emit time if we don't have time. Don't have time if gmtime fails.

diff --git a/gpsbabel/xmlgeneric.c b/gpsbabel/xmlgeneric.c
index d8895634e30c00237ff536f8705d4d94ea08a1be..578491d4032345b233ce87bc11c2d9285c9d6280 100644 (file)
--- a/gpsbabel/xmlgeneric.c
+++ b/gpsbabel/xmlgeneric.c
@@ -105,8 +105,10 @@ xml_fill_in_time(char *time_string, const time_t timep, int long_or_short)
        struct tm *tm = gmtime(&timep);
        char *format;
        
-       if (!tm)
+       if (!tm) {
+               *time_string = 0;
                return;
+       }
        
        if (long_or_short == XML_LONG_TIME)
                format = "%02d-%02d-%02dT%02d:%02d:%02dZ";
@@ -126,11 +128,13 @@ xml_write_time(FILE *ofd, const time_t timep, char *elname)
 {
        char time_string[64];
        xml_fill_in_time(time_string, timep, XML_LONG_TIME);
-       fprintf(ofd, "<%s>%s</%s>\n",
-               elname,
-               time_string,
-               elname
-       );
+       if (time_string) {
+               fprintf(ofd, "<%s>%s</%s>\n",
+                       elname,
+                       time_string,
+                       elname
+               );
+       }
 
 }