GitLab

using printf to avoid \n for pwd input message

newline after "Please enter Password: " looks strange

memleak bugfix + cleanup + Makefile

- memleak bugfix as free() was missing
- dont call malloc() manually (the old way getline() always called realloc() anyway because of the way the malloc() was written [did not allocate enought memory for the string])
- small minor cleanup
- adding simple Makefile to build door challenge

- therefor if the program gets extended, its unlikly that
  someone will forget to call free()
- also this gets rid of copy-paste free() calls (which look stupid)

- implicitly declaring library function is bad manner :)

- adding missing free() calls
- dont malloc ourselves as getline() also does a malloc
  (and anyway called realloc before if the size_t was
   smaller then the actual len(input-line) to behaviour
   is the same!)