Mesa (master): mesa: ignore VAO IDs equal to 0 in glDeleteVertexArrays

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Module: Mesa
Branch: master
Commit: 355ed029b04fc510ae8d8605a2ef0c4ee726ac78
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=355ed029b04fc510ae8d8605a2ef0c4ee726ac78

Author: Marek Olšák <marek.olsak at amd.com>
Date:   Thu Aug 30 15:14:46 2018 -0400

mesa: ignore VAO IDs equal to 0 in glDeleteVertexArrays

This fixes a firefox crash.

Fixes: 781a78914c798dc64005b37c6ca1224ce06803fc

Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>

---

 src/mesa/main/arrayobj.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/mesa/main/arrayobj.c b/src/mesa/main/arrayobj.c
index a23031fe18..6e0665c0e5 100644
--- a/src/mesa/main/arrayobj.c
+++ b/src/mesa/main/arrayobj.c
@@ -1014,6 +1014,10 @@ delete_vertex_arrays(struct gl_context *ctx, GLsizei n, const GLuint *ids)
    GLsizei i;
 
    for (i = 0; i < n; i++) {
+      /* IDs equal to 0 should be silently ignored. */
+      if (!ids[i])
+         continue;
+
       struct gl_vertex_array_object *obj = _mesa_lookup_vao(ctx, ids[i]);
 
       if (obj) {