GUACAMOLE-774: Fix deprecation issue with Java 9 and up.
diff --git a/extensions/guacamole-auth-radius/src/main/java/org/apache/guacamole/auth/radius/RadiusAuthenticationProviderModule.java b/extensions/guacamole-auth-radius/src/main/java/org/apache/guacamole/auth/radius/RadiusAuthenticationProviderModule.java
index d34b0b3..a1928cc 100644
--- a/extensions/guacamole-auth-radius/src/main/java/org/apache/guacamole/auth/radius/RadiusAuthenticationProviderModule.java
+++ b/extensions/guacamole-auth-radius/src/main/java/org/apache/guacamole/auth/radius/RadiusAuthenticationProviderModule.java
@@ -57,6 +57,7 @@
      *     If an error occurs while retrieving the Guacamole server
      *     environment.
      */
+    @SuppressWarnings("deprecation")
     public RadiusAuthenticationProviderModule(AuthenticationProvider authProvider)
             throws GuacamoleException {