coru_platform [ARM]: fix for Wincompatible-pointer-types warning

[maximevince]

Hi geky,

I have found one of your other nice little projects :)

I propose a small fix in this pull request, since I noticed that my ARM GCC compiler was generating the following warning:

../../../libs/coru/coru_platform.c: In function 'coru_plat_init':                                                                                                                                                                                                               
../../../libs/coru/coru_platform.c:159:14: warning: assignment to 'uintptr_t *' {aka 'unsigned int *'} from incompatible pointer type 'uint32_t *' {aka 'long unsigned int *'} [-Wincompatible-pointer-types]                                                                   
  159 |     *pcanary = &sp[-size/sizeof(uint32_t)];                                                                                                                                                                                                                             
      |              ^                                           

The warning should be harmless, since it's only converting between pointers to a long unsigned integer on the one hand and an unsigned integer on the other hand, but I figured you might want to have this warning fixed anyway.

[geky]

Looks good to me, thanks for this!

Hmm, I'm not sure why CI is failing, it looks unrelated (I arm-none-eabi-gcc was updated?). I will fix that first and then bring this in.

[BartThoen]

Any update on this PR?