crash: sprintf(buffer,"no poi") with uninitialized buffer

[Jozef Mlich]

The buffer is not initialized id 0.96 and causing crash (it is very obvious when you are using touchscreen)

The patch is self explaining:

--- poi.c (revision 2)
+++ poi.c (working copy)
@@ -718,8 +718,9 @@

  }

- if(!poi_found)
- g_sprintf(buffer, "<b>No POI found</b>\n");
+ if(!poi_found) {
+ buffer = g_strdup_printf("<b>No POI found</b>\n");
+ }