Fixed typo in constant name.

core/src/main/java/org/springframework/security/config/Elements.java

@@ -34,7 +34,7 @@ abstract class Elements {
 	public static final String PORT_MAPPINGS = "port-mappings";
     public static final String PORT_MAPPING = "port-mapping";
     public static final String CUSTOM_FILTER = "custom-filter";
-    public static final String CUSTOM_AUTH_RPOVIDER = "custom-authentication-provider";
+    public static final String CUSTOM_AUTH_PROVIDER = "custom-authentication-provider";
     public static final String X509 = "x509";
 	public static final String FILTER_INVOCATION_DEFINITION_SOURCE = "filter-invocation-definition-source";
     public static final String LDAP_PASSWORD_COMPARE = "password-compare";

core/src/main/java/org/springframework/security/config/SecurityNamespaceHandler.java

@@ -29,6 +29,6 @@ public class SecurityNamespaceHandler extends NamespaceHandlerSupport {
         registerBeanDefinitionDecorator(Elements.INTERCEPT_METHODS, new InterceptMethodsBeanDefinitionDecorator());
         registerBeanDefinitionDecorator(Elements.FILTER_CHAIN_MAP, new FilterChainMapBeanDefinitionDecorator());
         registerBeanDefinitionDecorator(Elements.CUSTOM_FILTER, new OrderedFilterBeanDefinitionDecorator());
-        registerBeanDefinitionDecorator(Elements.CUSTOM_AUTH_RPOVIDER, new CustomAuthenticationProviderBeanDefinitionDecorator());
+        registerBeanDefinitionDecorator(Elements.CUSTOM_AUTH_PROVIDER, new CustomAuthenticationProviderBeanDefinitionDecorator());
     }
 }