simplify conditions

Author: Vladimir Kotal

opengrok-web/src/main/java/org/opengrok/web/api/v1/filter/IncomingFilter.java

@@ -98,11 +98,10 @@ public void filter(final ContainerRequestContext context) {
 
         if (request.isSecure()) {
             String authHeader;
-            if ((authHeader = request.getHeader(HttpHeaders.AUTHORIZATION)) != null) {
-                if (RuntimeEnvironment.getInstance().getAuthenticationTokens().contains(authHeader)) {
-                    logger.log(Level.FINEST, "allowing request to {0} based on authentication header", path);
-                    return;
-                }
+            if (((authHeader = request.getHeader(HttpHeaders.AUTHORIZATION)) != null) &&
+                    RuntimeEnvironment.getInstance().getAuthenticationTokens().contains(authHeader)) {
+                logger.log(Level.FINEST, "allowing request to {0} based on authentication header", path);
+                return;
             }
         }