--- a/jdk/src/windows/native/java/net/Inet4AddressImpl.c	Thu Nov 07 08:04:36 2013 +0000
+++ b/jdk/src/windows/native/java/net/Inet4AddressImpl.c	Thu Nov 07 08:23:00 2013 +0000
@@ -142,10 +142,15 @@
 
     if (!initialized) {
       ni_iacls = (*env)->FindClass(env, "java/net/InetAddress");
+      CHECK_NULL_RETURN(ni_iacls, NULL);
       ni_iacls = (*env)->NewGlobalRef(env, ni_iacls);
+      CHECK_NULL_RETURN(ni_iacls, NULL);
       ni_ia4cls = (*env)->FindClass(env, "java/net/Inet4Address");
+      CHECK_NULL_RETURN(ni_ia4cls, NULL);
       ni_ia4cls = (*env)->NewGlobalRef(env, ni_ia4cls);
+      CHECK_NULL_RETURN(ni_ia4cls, NULL);
       ni_ia4ctrID = (*env)->GetMethodID(env, ni_ia4cls, "<init>", "()V");
+      CHECK_NULL_RETURN(ni_ia4ctrID, NULL);
       initialized = 1;
     }