Fix issue where loaded keystore password wasn't returned for fs keystores

Author: dajudge

proxybase/src/main/java/com/dajudge/proxybase/certs/FileSystemKeyStoreLoader.java

@@ -60,7 +60,7 @@ private char[] getEffectiveKeyStorePassword() throws IOException {
 
     private char[] getEffectivePassword(final String path, final char[] password) throws IOException {
         if (path != null) {
-            new String(filesystem.readFile(path), StandardCharsets.UTF_8);
+            return new String(filesystem.readFile(path), StandardCharsets.UTF_8).toCharArray();
         }
         return password;
     }