0592e9dee1e20d7d5131219664674bacc92cd641
braney
  Wed Mar 6 15:05:30 2024 -0800
don't put out null "More Info.." link on hubs

diff --git src/hg/hgTracks/hgTracks.c src/hg/hgTracks/hgTracks.c
index 93f4c04..2f48c6c 100644
--- src/hg/hgTracks/hgTracks.c
+++ src/hg/hgTracks/hgTracks.c
@@ -9453,31 +9453,31 @@
                 if (strstr(group->label, "Collections"))
                     {
                     safef(idText, sizeof idText, "%s_edit", group->name);
                     hPrintf("<input name=\"hubEditButton\" id='%s'"
                         " type=\"button\" value=\"edit\">\n", idText);
                     jsOnEventByIdF("click", idText,
                         "document.editHubForm.submit();return true;");
                     }
                 }
 
             hPrintf("</td><td style='text-align:center; width:90%%;'>\n<B>%s</B>", group->label);
             hPrintf("</td><td style='text-align:right;'>\n");
             if (isHubTrack(group->name))
 		{
                 struct trackHub *hub = grabHashedHub(group->name);
-                if (hub)
+                if ((hub != NULL) && (hub->descriptionUrl != NULL))
                     hPrintf("<a href='%s' style='color:#FFF' target=_blank>More Info</a>&nbsp;&nbsp;", hub->descriptionUrl);
 
 		safef(idText, sizeof idText, "%s_disconn", group->name);
                 hPrintf("<input name=\"hubDisconnectButton\" id='%s'"
                     " type=\"button\" value=\"disconnect\">\n", idText);
 		jsOnEventByIdF("click", idText,
                     "document.disconnectHubForm.elements['hubId'].value='%s';"
                     "document.disconnectHubForm.submit();return true;",
 		    group->name + strlen(hubTrackPrefix));
 		}
 
             hPrintf("<input type='submit' name='hgt.refresh' value='refresh' "
                     "title='Update image with your changes'>\n");
             hPrintf("</td></tr></table></th>\n");
             controlGridEndRow(cg);