frankenphp

11160fb7 - fix: segmentation fault when registering multiple extensions (#2112)

fix: segmentation fault when registering multiple extensions (#2112) This PR fixes a segmentation fault when using frankenphp.RegisterExtension with more than one extension. The issue was a type mismatch between Go and C: Go passes a slice of pointers, but the C code was treating it as a contiguous array of structs. This caused invalid memory access when iterating past the first element. I created a minimal reproduction repo here: [https://github.com/y-l-g/frankenphp-extensions-segfault-repro](https://www.google.com/url?sa=E&q=https%3A%2F%2Fgithub.com%2Fy-l-g%2Ffrankenphp-extensions-segfault-repro)