Fixed FingerprintTrustManagerFactory constructor

Motivation:

When constructing a FingerprintTrustManagerFactory from an Iterable of Strings, the fingerprints were correctly parsed but never added to the result array. The constructed FingerprintTrustManagerFactory consequently fails to validate any certificate.

Modifications:

I added a line to add each converted SHA-1 certificate fingerprint to the result array which then gets passed on to the next constructor.

Result:

Certificate fingerprints passed to the constructor are now correctly added to the array of valid fingerprints. The resulting FingerprintTrustManagerFactory object correctly validates certificates against the list of specified fingerprints.

handler/src/main/java/io/netty/handler/ssl/util/FingerprintTrustManagerFactory.java

@@ -190,6 +190,7 @@ public final class FingerprintTrustManagerFactory extends SimpleTrustManagerFact
                 int strIdx = i << 1;
                 farr[i] = (byte) Integer.parseInt(f.substring(strIdx, strIdx + 2), 16);
             }
+            list.add(farr);
         }
 
         return list.toArray(new byte[list.size()][]);