Reverse the string compare because country can be null

Author: hendrikmoree

src/main/java/de/komoot/photon/nominatim/NominatimConnector.java

@@ -324,16 +324,16 @@ private void completePlace(PhotonDoc doc) {
         for (AddressRow address : addresses) {
             AddressType atype = address.getAddressType();
 
-            if (doc.getCountryCode().equals("BE") && address.rankAddress == 20) continue;
-            if (doc.getCountryCode().equals("NL") && address.rankAddress == 16) {
+            if ("BE".equals(doc.getCountryCode()) && address.rankAddress == 20) continue;
+            if ("NL".equals(doc.getCountryCode()) && address.rankAddress == 16) {
                 dutchRank16City = true;
             };
 
             if (atype != null
                     && (atype == doctype || !doc.setAddressPartIfNew(atype, address.getName()))
                     && address.isUsefulForContext()) {
 
-                if (doc.getCountryCode().equals("NL") && address.rankAddress == 14 && dutchRank16City) { // Dit is de gemeente, skip deze als de plaats al gezet is. e.g.: Bij Bennekom geen Ede indexeren in de context
+                if ("NL".equals(doc.getCountryCode()) && address.rankAddress == 14 && dutchRank16City) { // Dit is de gemeente, skip deze als de plaats al gezet is. e.g.: Bij Bennekom geen Ede indexeren in de context
                     continue;
                 }