Plug two memory leaks

refs #10963

lib/base/tlsutility.cpp

@@ -561,6 +561,7 @@ String RandomString(int length)
 		sprintf(output + 2 * i, "%02x", bytes[i]);
 
 	String result = output;
+	delete [] bytes;
 	delete [] output;
 
 	return result;

lib/remote/base64.cpp

@@ -39,7 +39,7 @@ String Base64::Encode(const String& input)
 
 	String ret = String(outbuf, outbuf + len);
 	BIO_free_all(bio64);
-	
+
 	return ret;
 }
 
@@ -61,7 +61,8 @@ String Base64::Decode(const String& input)
 
 	String ret = String(outbuf, outbuf + len);
 	BIO_free_all(bio64);
-	
+	delete [] outbuf;
+
 	if (ret.IsEmpty() && !input.IsEmpty())
 		throw std::invalid_argument("Not a valid base64 string");