[PATCH libX11] doc: clean the grohtml png files so distcheck succeeds

[Gaetan Nadon]

Left over png files causes distcheck to fail.

Signed-off-by: Gaetan Nadon <memsize at videotron.ca>
---
 specs/troffrules.in |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/specs/troffrules.in b/specs/troffrules.in
index 0cd7454..9deb40c 100644
--- a/specs/troffrules.in
+++ b/specs/troffrules.in
@@ -37,7 +37,7 @@ doc_DATA =	$(doc_sources:.ms=.txt) \
 		$(doc_sources:.ms=.html)
 
 CLEANFILES = $(doc_DATA)
-MOSTLYCLEANFILES = index.*
+MOSTLYCLEANFILES = index.* grohtml-*.png
 
 # Pass version string as a troff string for substitution
 GROFF_DEFS = -dxV="$(PACKAGE_STRING)"
-- 
1.6.0.4