view: mark view as dirty even when resizing to same size

This makes sure that a successive view_update call returns
true and as a result the status bar will be correctly redrawn.

view.c

@@ -456,8 +456,10 @@ bool view_resize(View *view, int width, int height) {
 		width = 1;
 	if (height <= 0)
 		height = 1;
-	if (view->width == width && view->height == height)
+	if (view->width == width && view->height == height) {
+		view->need_update = true;
 		return true;
+	}
 	size_t lines_size = height*(sizeof(Line) + width*sizeof(Cell));
 	if (lines_size > view->lines_size) {
 		Line *lines = realloc(view->lines, lines_size);