[svn-r4107]

Purpose:
    Bug fix
Description:
    One of the function calls (H5Sget_simple_extent_dims) used parameter with
    the wrong type. That caused compilation errors on T3E.
Solution:
    Used NULL since that argument is optional and was never used.
Platforms tested:
    T3E(mcurie) and IRIX64 (modi4)

hl/tools/gif2h5/readhdf.c

@@ -38,7 +38,6 @@ int ReadHDF(BYTE** data ,
 	hid_t pal_set;	/* dataset for palette */
 	hid_t pal_space;/* dataspace for palette */
 	hsize_t datasize;	/* size of the image */
-	hsize_t maxdims;	/* dummy */
 	int pal_exist = 0;	/* do we have a palette? */
 
 	/* check stuff */
@@ -72,7 +71,7 @@ int ReadHDF(BYTE** data ,
 	}
 
 	/* get the dimension size of the image */
-	if (H5Sget_simple_extent_dims(dspace , image_size , &maxdims) !=2 ) {
+	if (H5Sget_simple_extent_dims(dspace , image_size , NULL) !=2 ) {
 		fprintf(stderr , "Unable to get dimension info\n");
 		return -1;
 	}