[PATCH] move to c99 style for structure members

While getting travis-ci ready I'm testing with gcc and clang.

clang is a lot more fussy and generates pages of warnings. There is an output limit in travis-ci that these warnings cause to exceed. These warnings overall contribute to about 1/2 the output.

C99 isn't too much of a leap forward from C89

patch: https://github.com/MariaDB/server/pull/52