Merge pull request adafruit#3507 from jepler/issue3506-matrixportal-crash

ladyada · web-flow · commit 9535edb8f4be · 2020-10-02T22:16:32.000-04:00
displayio: Fix matrixportal crash
diff --git a/shared-module/displayio/display_core.c b/shared-module/displayio/display_core.c
@@ -197,7 +197,7 @@ bool displayio_display_core_get_dither(displayio_display_core_t* self){
 }
 
 bool displayio_display_core_bus_free(displayio_display_core_t *self) {
-    return self->bus_free(self->bus);
+    return !self->bus || self->bus_free(self->bus);
 }
 
 bool displayio_display_core_begin_transaction(displayio_display_core_t* self) {

Original file line number	Diff line number	Diff line change
`@@ -197,7 +197,7 @@ bool displayio_display_core_get_dither(displayio_display_core_t* self){`
`197`	`197`	`}`
`198`	`198`
`199`	`199`	`bool displayio_display_core_bus_free(displayio_display_core_t *self) {`
`200`		`- return self->bus_free(self->bus);`
	`200`	`+ return !self->bus \|\| self->bus_free(self->bus);`
`201`	`201`	`}`
`202`	`202`
`203`	`203`	`bool displayio_display_core_begin_transaction(displayio_display_core_t* self) {`