Potential unsafe operation on data returned from fgets

[musteresel]

wsapi/src/fastcgi/lfcgi.c

Lines 365 to 366 in 8bbfe70

	l = strlen(p);
	if (p[l-1] != '\n')

The buffer may contain a zero byte; which may even be at the beginning. This causes strlen to return 0, and thus (size_t) 0 - 1 will result in SIZE_MAX and thus cause an out of buffer access

See https://wiki.sei.cmu.edu/confluence/pages/viewpage.action?pageId=87152422