Findbugs all over #2

Mostly char encoding
Use StringWriter rather than OSW->BAOS->String

router/java/src/net/i2p/router/networkdb/reseed/Reseeder.java

@@ -572,7 +572,7 @@ public class Reseeder {
                     System.err.println("Reseed got no router infos from " + seedURL);
                     return 0;
                 }
-                String content = new String(contentRaw);
+                String content = DataHelper.getUTF8(contentRaw);
                 // This isn't really URLs, but Base64 hashes
                 // but they may include % encoding
                 Set<String> urls = new HashSet<String>(1024);

router/java/src/net/i2p/router/time/NtpMessage.java

@@ -442,7 +442,13 @@ class NtpMessage {
         // or stratum-1 (primary) servers, this is a four-character ASCII
         // string, left justified and zero padded to 32 bits.
         if(stratum==0 || stratum==1) {
-            return new String(ref);
+            StringBuilder buf = new StringBuilder(4);
+            for (int i = 0; i < 4; i++) {
+                if (ref[i] == 0)
+                    break;
+                buf.append((char) (ref[i] & 0xff));
+            }
+            return buf.toString();
         }
         
         // In NTP Version 3 secondary servers, this is the 32-bit IPv4