so a typo on flags will go unnoticed; I put flags in this my_free() definition (as a no-op which
will still make the compiler check correctness of the flags). Applied: this caught a typo in my_realloc.c. Kindly approved by Konstantin and Mats.
include/my_sys.h:
When we define my_free(PTR,FG) to be my_no_flags_free(PTR) we don't make the compiler check
correctness of FG, which can hurt if another person build with a different definition of my_free;
so I add FG in the expression.
mysys/my_realloc.c:
typo found by the change in my_sys.h :)
