mesa: pass target through to driver when choosing texture format

This only matters for TextureView where the texObj's target has not been
set yet, in all other instances, texObj->target should be the same as
the passed-in target parameter.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Brian Paul <brianp@vmware.com>

src/mesa/main/teximage.c

@@ -3024,7 +3024,7 @@ _mesa_choose_texture_format(struct gl_context *ctx,
    }
 
    /* choose format from scratch */
-   f = ctx->Driver.ChooseTextureFormat(ctx, texObj->Target, internalFormat,
+   f = ctx->Driver.ChooseTextureFormat(ctx, target, internalFormat,
                                        format, type);
    ASSERT(f != MESA_FORMAT_NONE);
    return f;