Fix: Test if location is null in cve_scan_host to prevent an assertio…

…n error

Merge pull request #1711 from greenbone/mergify/bp/main/pr-1709
Added a test if location is null to prevent an assertion error. (backport #1709)

src/manage.c

@@ -2892,6 +2892,13 @@ cve_scan_host (task_t task, report_t report, gvm_host_t *gvm_host)
                   const char *location;
                   location = app_locations_iterator_location (&locations_iter);
 
+                  if (location == NULL)
+                    {
+                      g_warning ("%s: Location is null for ip %s, app %s",
+                                 __func__, ip, app);
+                      continue;
+                    }
+
                   if (locations->len)
                     g_string_append (locations, ", ");
                   g_string_append (locations, location);