8216067: Unused local vars in windows/native/libjava/io_util_md.c

Reviewed-by: rriggs
diff --git a/src/java.base/windows/native/libjava/io_util_md.c b/src/java.base/windows/native/libjava/io_util_md.c
index a7e04ec..eda0b4a 100644
--- a/src/java.base/windows/native/libjava/io_util_md.c
+++ b/src/java.base/windows/native/libjava/io_util_md.c
@@ -559,8 +559,6 @@
 handleLseek(FD fd, jlong offset, jint whence)
 {
     LARGE_INTEGER pos, distance;
-    DWORD lowPos = 0;
-    long highPos = 0;
     DWORD op = FILE_CURRENT;
     HANDLE h = (HANDLE)fd;