Removing unused variables from functions.

Signed-off-by: David M. Syzdek <david.syzdek@acsalaska.com>
Fixing implicit conversions in expire.c by using correct data type for values.

Signed-off-by: David M. Syzdek <david.syzdek@acsalaska.com>
Changing size variables from int to either size_t or ssize_t.

Updating code to use type size_t and ssize_t inead of type int when processing
buffer sizes. Many of the values are derived from sizeof(), sizelen(), read(),
and write() which use size_t and ssize_t types.

Signed-off-by: David M. Syzdek <david.syzdek@acsalaska.com>
Initializing declared but uninitialized variables.

Adding default values to variables which are declared but not initialized and
have the potential for being read prior to being initialized with specific
values.

Signed-off-by: David M. Syzdek <david.syzdek@acsalaska.com>