7171591: getDefaultScopeID() in src/solaris/native/java/net/net_util_md.c should return a value

Summary: Use CHECK_NULL_RETURN instead of CHECK_NULL
Reviewed-by: alanb

src/solaris/native/java/net/net_util_md.c

@@ -114,9 +114,9 @@ int getDefaultScopeID(JNIEnv *env) {
     static jfieldID ni_defaultIndexID;
     if (ni_class == NULL) {
         jclass c = (*env)->FindClass(env, "java/net/NetworkInterface");
-        CHECK_NULL(c);
+        CHECK_NULL_RETURN(c, 0);
         c = (*env)->NewGlobalRef(env, c);
-        CHECK_NULL(c);
+        CHECK_NULL_RETURN(c, 0);
         ni_defaultIndexID = (*env)->GetStaticFieldID(env, c,
                                                      "defaultIndex", "I");
         ni_class = c;