Fix #1735: safely uppercase string even if it is null

Since we check for the null string once if has been uppercased, it makes
sense to use a method which allows null in and out.

1 files changed, 1 insertions, 1 deletions

diff --git a/main/src/cgeo/geocaching/apps/cache/navi/AbstractStaticMapsApp.java b/main/src/cgeo/geocaching/apps/cache/navi/AbstractStaticMapsApp.java
index ff61404..266acfd 100644
--- a/main/src/cgeo/geocaching/apps/cache/navi/AbstractStaticMapsApp.java
+++ b/main/src/cgeo/geocaching/apps/cache/navi/AbstractStaticMapsApp.java
@@ -47,7 +47,7 @@ abstract class AbstractStaticMapsApp extends AbstractNavigationApp {
 
     protected static boolean invoke(final Activity activity, final cgCache cache, final cgWaypoint waypoint, final boolean download) {
         final ILogable logable = cache != null && cache.getListId() != 0 ? cache : waypoint;
-        final String geocode = logable.getGeocode().toUpperCase();
+        final String geocode = StringUtils.upperCase(logable.getGeocode());
         if (geocode == null) {
             ActivityMixin.showToast(activity, getString(R.string.err_detail_no_map_static));
             return true;