Change '%i' to '$i' in call to mpas_log_write from mpas_block_decomp_cells_for_proc

If a mesh decomposition file with the right number of partitions is not found,
the message string should use '$i' rather than '%i' to print an integer (which in
this case is the number of requested blocks).

Author: mgduda

src/framework/mpas_block_decomp.F

@@ -120,7 +120,7 @@ subroutine mpas_block_decomp_cells_for_proc(dminfo, partial_global_graph_info, l
            open(unit=iunit, file=trim(filename), form='formatted', status='old', iostat=istatus)
 
            if (istatus /= 0) then
-              call mpas_log_write('Could not open block decomposition file for %i blocks.', MPAS_LOG_ERR, intArgs=(/dminfo % total_blocks/) )
+              call mpas_log_write('Could not open block decomposition file for $i blocks.', MPAS_LOG_ERR, intArgs=(/dminfo % total_blocks/) )
               call mpas_log_write('Filename: '//trim(filename), MPAS_LOG_CRIT)
            end if