CID 248378: Division or modulo by float zero (DIVIDE_BY_ZERO)

2. divide_by_zero: In expression 32f /

static_cast<GLfloat>(cfg.checkSize(false)), division by expression
cfg.checkSize(false) which may be zero has undefined behavior.

(cherry picked from commit cc80eb9edeb2517bb7965c228f07b59ad11956c3)