2 less compilation warnings.

This commit was SVN r5492.

src/datatype/dt_pack.c

@@ -216,7 +216,7 @@ int ompi_convertor_pack_homogeneous_with_memcpy( ompi_convertor_t* pConv,
             int stop_in_loop = 0;
             if( pElems[pos_desc].flags & DT_FLAG_CONTIGUOUS ) {
                 dt_elem_desc_t* pLast = &(pElems[pos_desc + pElems[pos_desc].disp]);
-		if( (pLast->extent * last_count) > space ) {
+                if( (pLast->extent * last_count) > (int)space ) {
                     stop_in_loop = last_count;
                     last_count = space / pLast->extent;
                 }
@@ -407,7 +407,7 @@ int ompi_convertor_pack_no_conversion( ompi_convertor_t* pConv,
                     (*freeAfter) |= (1 << iov_pos);
                 }
                 /* compute the maximum amount of data to be packed */
-                if( (pLast->extent * last_count) > space_on_iovec ) {
+                if( (pLast->extent * last_count) > (int)space_on_iovec ) {
                     stop_in_loop = last_count;
                     last_count = space_on_iovec / pLast->extent;
                 }