Fix: minor analyzer warnings

[Coeur]

Description

Fix minor analyzer warnings:

• Extra ';' outside of a function is incompatible with C++98
• 'break' will never be executed
• foundUints is never used
• Not a Doxygen trailing comment
• Zero as null pointer constant
• minutes is garbage value
• dereference of null nzbInfo pointer
• addbuf is garbage value
• difSizeCount is never used
• dereference of null m_postInfo pointer
• origName is garbage value
• fileList can be empty even after empty() check
• sort can be null

[dnzbk]

Thank you