Added bugfix from David Neary to fix #9156.

ChangeLog

+2000-12-18  Daniel Egger <egger@suse.de>
+
+	* plug-ins/ifcompose/ifscompose.c:
+	Added patch from David Neary to fix calulations. 
+	Fixes bug #9156.
+
 2000-12-18  Sven Neumann  <sven@gimp.org>
 	    Jens Lautenbacher <jtl@gimp.org>

plug-ins/ifscompose/ifscompose.c

@@ -1354,7 +1354,10 @@ ifs_compose (GimpDrawable *drawable)
 
   num_bands = ceil((gdouble)(width*height*SQR(ifsvals.subdivide)*5)
 		   / (1024 * ifsvals.max_memory));
-  band_height = height / num_bands;
+  band_height = (height / num_bands) + 1; 
+  /* For bug #9156 - adding 1 guarantees that band_height*num_bands>height
+   * band_height automatically got rounded down, resulting in a diff 
+   * of a few pixels. */ 
   if (band_height > height)
     band_height = height;