- was doing a strlen first on path to calculate the length
- stored at least three local variables for string constants
- did another memcmp check after doing the length comparison conditional first
Simplify all this into a simple string comparison checking if the
path starts with the string 'vfsonly://' and/or 'cdrom://' -
avoid both strlen and memcmp cost. Also removed the need for
stdstring.h header include - just translated STRLEN_CONST into
(sizeof(x)-1) - no header file dependency for the only usage of stdstring.h
in this file
7871e9fbc1