[Cleanup] Note To Self - Not Important

[zakuArbor]

Purpose

• A list of places to clean up code
• Does not add any new functionality nor enhancement
• Just running away from writing my physics labs :(

Tasks/Goals

• Add a guard statement
  • Negate condition and return early to remove one level of nest
• Add an extra * at the beginning of each comment (i.e. /**) so that doxygen can parse in pam_sec.h

Summary

To fill out once the issue is to be closed. Give a short summary of the changes you made to implement or fix an issue

[zakuArbor]

Should append all calls to free with the following:

• set variable to NULL if freed
  This is to prevent double free only if the variable is passed into other functions

Note: free(NULL) is safe behavior: If ptr is NULL, no operation is performed.