FIX: Flash status compilation error

[blckmn]

Fixes:

%% (debug) ./src/main/io/asyncfatfs/asyncfatfs.c
./src/main/drivers/flash_m25p16.c: In function 'm25p16_readStatus':
./src/main/drivers/flash_m25p16.c:163:12: error: 'status' may be used uninitialized in this function [-Werror=maybe-uninitialized]
  163 |     return status;
      |            ^~~~~~
cc1: all warnings being treated as errors

[github-actions]

Do you want to test this code? Here you have an automated build:
Assets
WARNING: It may be unstable. Use only for testing! See: https://www.youtube.com/watch?v=I1uN9CN30gw for instructions for unified targets!

[blckmn]

AUTOMERGE: (FAIL)

• github identifies PR as mergeable -> FAIL
• assigned to a milestone -> PASS
• cooling off period lapsed -> FAIL
• commit count less or equal to three -> PASS
• Don't merge label NOT found -> PASS
• at least one RN: label found -> PASS
• Tested label found -> FAIL
• assigned to an approver -> PASS
• approver count at least three -> FAIL