prevented addition of two id-oracle-pkcs12-trusted-key-usage attributes in PKCS12 files. Fix for github #1945

Author: dghgit

prov/src/main/java/org/bouncycastle/jcajce/provider/keystore/pkcs12/PKCS12KeyStoreSpi.java

@@ -1943,6 +1943,11 @@ private SafeBag createSafeBag(String certId, Certificate cert, boolean overwrite
                     continue;
                 }
 
+                if (oid.equals(MiscObjectIdentifiers.id_oracle_pkcs12_trusted_key_usage))
+                {
+                    continue;
+                }
+                
                 ASN1EncodableVector fSeq = new ASN1EncodableVector();
 
                 fSeq.add(oid);