Fix covscan memory leaks on main branch

[mreynolds389]

Issue Description

Covscan reports 26 leaks on main branch, and other issues of course.

ARRAY_VS_SINGLETON        9
BAD_CHECK_OF_WAIT_COND    11
COMPILER_WARNING          1
IDENTICAL_BRANCHES        1
INTEGER_OVERFLOW          5
LOCK_EVASION              9
OVERRUN                   35
RESOURCE_LEAK             26
USE_AFTER_FREE            25
Y2K38_SAFETY              2

[mreynolds389]

9e335ef..0ff0425 389-ds-base-3.0 -> 389-ds-base-3.0
d2e54cc..273d9ca 389-ds-base-2.6 -> 389-ds-base-2.6
b7c575e..509676b 389-ds-base-2.5 -> 389-ds-base-2.5
4172ebf..4cc45a0 389-ds-base-2.4 -> 389-ds-base-2.4