updated for version 7.4.524
Problem:    When using ":ownsyntax" spell checking is messed up. (Issue 78)
Solution:   Use the window-local option values. (Christian Brabandt)
Added tag v7-4-524 for changeset 762ab69c2d13
updated for version 7.4.525
Problem:    map() leaks memory when there is an error in the expression.
Solution:   Call clear_tv(). (Christian Brabandt)
Added tag v7-4-525 for changeset 2587209317b7