stm32/main: Fix bug mounting 3rd SD partition.
Fixes issue
@@ -260,7 +260,7 @@ STATIC bool init_sdcard_fs(void) {
// subsequent partitions are numbered by their index in the partition table
if (part_num == 2) {
vfs->str = "/sd2";
- } else if (part_num == 2) {
+ } else if (part_num == 3) {
vfs->str = "/sd3";
} else {
vfs->str = "/sd4";
