xmltv: fix crash when display-name tag is empty, fixes #4158

diff --git a/src/epggrab/module/xmltv.c b/src/epggrab/module/xmltv.c
index 7751c3749efb12e3e7c59a2654b932275804d3f2..4cbf9996660a6201aaaa81db8e00f4d0cd4a892f 100644 (file)
--- a/src/epggrab/module/xmltv.c
+++ b/src/epggrab/module/xmltv.c
@@ -657,7 +657,7 @@ static int _xmltv_parse_channel
       int n = 0;
 
       name = htsmsg_get_str(subtag, "cdata");
-      if (chnum) {
+      if (chnum && name) {
         while (isdigit(*(name + n))) n++;
         if (n > 0) {
           if (*(name + n) == 0 || (*(name + n) == ' ' && chnum == 1)) {