DESCRIPTION
===========
PVS-Studio static code analyzer found several suspicious
fragments of code across various files.

i)   sizeof() is using the pointer
ii)  memcpy() doesn't copy the whole string.
iii) enumeration constant 'wkb_multilinestring' is used as
     a variable of a Boolean-type.
iv) 'throw' keyword is missing from std::runtime_error()

FIX
===
i)   Use sizeof({actual object/data type})
ii)  Use strncpy() and set last char as '\0'
iii) N/A (Issue has already been fixed)
iv)  Add 'throw' before the exception.

RB: 21502