st/mesa: set take_ownership=true for util_draw_vertex_buffer in st_DrawTex

Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27492>

src/mesa/state_tracker/st_cb_drawtex.c

@@ -297,13 +297,11 @@ st_DrawTex(struct gl_context *ctx, GLfloat x, GLfloat y, GLfloat z,
    }
 
    util_draw_vertex_buffer(pipe, cso, vbuffer,
-                           offset, false,
+                           offset, true,
                            MESA_PRIM_TRIANGLE_FAN,
                            4,  /* verts */
                            numAttribs); /* attribs/vert */
 
-   pipe_resource_reference(&vbuffer, NULL);
-
    /* restore state */
    cso_restore_state(cso, 0);
    ctx->Array.NewVertexElements = true;