cdfDefVarMissval: fix type _FillValue_FillValue.

src/cdf_write.c

@@ -97,7 +97,7 @@ void cdfDefVarMissval(stream_t *streamptr, int varID, int dtype, int lcheck)
       if ( streamptr->ncmode != 2 ||
            streamptr->filetype == CDI_FILETYPE_NC ||
            streamptr->filetype == CDI_FILETYPE_NC2 )
-        cdf_put_att_double(fileID, ncvarid, "_FillValue_FillValue", (nc_type) xtype, 1, &missval);
+        cdf_put_att_double(fileID, ncvarid, "_FillValue", (nc_type) xtype, 1, &missval);
 
       cdf_put_att_double(fileID, ncvarid, "missing_value", (nc_type) xtype, 1, &missval);