Use Objects.requireNonNull() in ConditionalConfigurationRegistry.

(cherry picked from commit 0ba6cc2)

substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/ConditionalConfigurationRegistry.java

@@ -26,6 +26,7 @@
 
 import java.util.Collection;
 import java.util.Map;
+import java.util.Objects;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentLinkedQueue;
 
@@ -38,14 +39,8 @@ public abstract class ConditionalConfigurationRegistry {
     private final Map<String, Collection<Runnable>> pendingReachabilityHandlers = new ConcurrentHashMap<>();
 
     protected void registerConditionalConfiguration(ConfigurationCondition condition, Runnable runnable) {
-        if (condition == null) {
-            throw new NullPointerException("Cannot use null value as condition for conditional configuration. " +
-                            "Please ensure that you register a non-null condition.");
-        }
-        if (runnable == null) {
-            throw new NullPointerException("Cannot use null value as runnable for conditional configuration. " +
-                            "Please ensure that you register a non-null runnable.");
-        }
+        Objects.requireNonNull(condition, "Cannot use null value as condition for conditional configuration. Please ensure that you register a non-null condition.");
+        Objects.requireNonNull(runnable, "Cannot use null value as runnable for conditional configuration. Please ensure that you register a non-null runnable.");
         if (ConfigurationCondition.alwaysTrue().equals(condition)) {
             /* analysis optimization to include new types as early as possible */
             runnable.run();