Fix defined-but-no-used warning by moving "#ifdef OBSOLETE" to include function "merge_leaves()" that was used only by code previouly marked as OBSOLETE.
Fix defined-but-no-used warning by moving
"#ifdef OBSOLETE" to include function "merge_leaves()"
that was used only by code previouly marked as OBSOLETE.

jho1965us/graphviz,MjAbuz/graphviz,kbrock/graphviz,tkelman/graphviz,MjAbuz/graphviz,ellson/graphviz,pixelglow/graphviz,jho1965us/graphviz,MjAbuz/graphviz,jho1965us/graphviz,ellson/graphviz,kbrock/graphviz,BMJHayward/graphviz,tkelman/graphviz,jho1965us/graphviz,BMJHayward/graphviz,ellson/graphviz,pixelglow/graphviz,MjAbuz/graphviz,MjAbuz/graphviz,kbrock/graphviz,BMJHayward/graphviz,tkelman/graphviz,pixelglow/graphviz,kbrock/graphviz,jho1965us/graphviz,ellson/graphviz,tkelman/graphviz,pixelglow/graphviz,BMJHayward/graphviz,tkelman/graphviz,BMJHayward/graphviz,kbrock/graphviz,tkelman/graphviz,jho1965us/graphviz,MjAbuz/graphviz,kbrock/graphviz,jho1965us/graphviz,MjAbuz/graphviz,ellson/graphviz,kbrock/graphviz,ellson/graphviz,tkelman/graphviz,ellson/graphviz,jho1965us/graphviz,pixelglow/graphviz,pixelglow/graphviz,MjAbuz/graphviz,BMJHayward/graphviz,MjAbuz/graphviz,pixelglow/graphviz,BMJHayward/graphviz,tkelman/graphviz,ellson/graphviz,jho1965us/graphviz,MjAbuz/graphviz,tkelman/graphviz,pixelglow/graphviz,ellson/graphviz,tkelman/graphviz,ellson/graphviz,ellson/graphviz,jho1965us/graphviz,pixelglow/graphviz,pixelglow/graphviz,BMJHayward/graphviz,kbrock/graphviz,BMJHayward/graphviz,pixelglow/graphviz,kbrock/graphviz,BMJHayward/graphviz,tkelman/graphviz,kbrock/graphviz,MjAbuz/graphviz,jho1965us/graphviz,kbrock/graphviz,BMJHayward/graphviz