compositor: disable attrib arrays after use

Not strictly necessary right now, but nice to clean up.

Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
diff --git a/src/compositor.c b/src/compositor.c
index cc77747..d8d78ce 100644
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -690,8 +690,12 @@
 	glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 	glEnableVertexAttribArray(0);
 	glEnableVertexAttribArray(1);
+
 	glDrawElements(GL_TRIANGLES, n * 6, GL_UNSIGNED_INT, ec->indices.data);
 
+	glDisableVertexAttribArray(1);
+	glDisableVertexAttribArray(0);
+
 	ec->vertices.size = 0;
 	ec->indices.size = 0;
 	pixman_region32_fini(&repaint);