Fix off-by-one read in `latlon2ul()`

diff --git a/pdns/sillyrecords.cc b/pdns/sillyrecords.cc
index b2a7ea18844d59352e7c40604187154c27a74137..289cdb18cb63feba7815964d6ec98a0c0dcc22a7 100644 (file)
--- a/pdns/sillyrecords.cc
+++ b/pdns/sillyrecords.cc
@@ -137,6 +137,9 @@ latlon2ul(const char **latlonstrptr, int *which)
     break;
   }
 
+  if (!*cp)
+    return 0;
+
   cp++;                   /* skip the hemisphere */
   
   while (*cp && !isspace(*cp))   /* if any trailing garbage */