[Mesa-stable] [PATCH 05/24] t_dd_dmatmp.h: Use addition instead of subtraction in loop bounds

[Ian Romanick]

From: Ian Romanick <ian.d.romanick at intel.com>

This is used everywhere else in this file because it avoids problems
when count is zero (due to trimming).

Signed-off-by: Ian Romanick <ian.d.romanick at intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38109
Cc: Marius Predut <marius.predut at intel.com>
Cc: "10.6 11.0" <mesa-stable at lists.freedesktop.org>
---
 src/mesa/tnl_dd/t_dd_dmatmp.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mesa/tnl_dd/t_dd_dmatmp.h b/src/mesa/tnl_dd/t_dd_dmatmp.h
index 99a949f..ede16e1 100644
--- a/src/mesa/tnl_dd/t_dd_dmatmp.h
+++ b/src/mesa/tnl_dd/t_dd_dmatmp.h
@@ -623,7 +623,7 @@ static void TAG(render_quads_verts)( struct gl_context *ctx,
 
       INIT(GL_TRIANGLES);
 
-      for (j = 0; j < count-3; j += 4) {
+      for (j = 0; j + 3 < count; j += 4) {
 	 void *tmp = ALLOC_VERTS( 6 );
 	 /* Send v0, v1, v3
 	  */
-- 
2.1.0