RFR: JDK-8037909 - JNI warnings in jdk/src/windows/native/java/nio/MappedByteBuffer.c

[Mark Sheppard]

Hi
please oblige and review the follow change

diff -r c0d1026bff6f src/java.base/windows/native/libnio/MappedByteBuffer.c
--- a/src/java.base/windows/native/libnio/MappedByteBuffer.c    Tue Nov 
04 15:10:38 2014 +0000
+++ b/src/java.base/windows/native/libnio/MappedByteBuffer.c    Mon Nov 
10 17:32:51 2014 +0000
@@ -86,6 +86,7 @@
              if (clazz == NULL)
                  return; // exception thrown
              handle_fdID = (*env)->GetFieldID(env, clazz, "handle", "J");
+            CHECK_NULL(handle_fdID);
          }
          h = jlong_to_ptr((*env)->GetLongField(env, fdo, handle_fdID));
          result = FlushFileBuffers(h);

to address the parfait issue

https://bugs.openjdk.java.net/browse/JDK-8037909

regards
Mark