Fixed this warning:

src/mem.c: In function ‘dbg_realloc’:
src/mem.c:107:5: warning: pointer ‘ptr’ used after ‘realloc’ [-Wuse-after-free]
  107 |     unlog_ptr(ptr, file, line);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~
src/mem.c:103:20: note: call to ‘realloc’ here
  103 |     void* newptr = realloc(ptr, size);
      |                    ^~~~~~~~~~~~~~~~~~

Added some code to resolve this warning:

src/system.c: In function ‘mvlink’:
src/system.c:212:46: warning: ‘strncat’ specified bound 1 equals source length [-Wstringop-overflow=]
  212 |     if (new_link[strlen(new_link)-1] != '/') strncat(new_link,"/",1);
      |                                              ^~~~~~~~~~~~~~~~~~~~~~~