fix abinfo error message on patch loading

pd/src/g_canvas.c

@@ -2508,7 +2508,7 @@ static t_symbol *ab_extend_name(t_canvas *x, t_symbol *s)
     return gensym(res);
 }
 
-static int abframe = 0;
+int abframe = 0;
 static void canvas_abframe(t_canvas *x, t_float val)
 {
     abframe = val;

pd/src/g_canvas.h

@@ -580,6 +580,7 @@ EXTERN void canvas_unsetcurrent(t_canvas *x);
 EXTERN t_symbol *canvas_realizedollar(t_canvas *x, t_symbol *s);
 EXTERN t_canvas *canvas_getrootfor(t_canvas *x);
 EXTERN t_canvas *canvas_getrootfor_ab(t_canvas *x);
+EXTERN int abframe;
 EXTERN void canvas_dirty(t_canvas *x, t_floatarg n);
 EXTERN int canvas_getfont(t_canvas *x);
 typedef int (*t_canvasapply)(t_canvas *x, t_int x1, t_int x2, t_int x3);

pd/src/x_interface.c

@@ -1652,8 +1652,13 @@ void *abinfo_new(void)
     }
     else
     {
-        error("abinfo: only instantiable inside an ab object");
-        x = 0;
+        if(!abframe)
+        {
+            error("abinfo: only instantiable inside an ab object");
+            x = 0;
+        }
+        else
+            x = pd_new(text_class);
     }
     return (x);
 }