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This commit addresses cppcheck warnings about C-style casts (cstyleCast)
by replacing them with appropriate C++ casts. C-style casts are considered
dangerous because they can perform unsafe conversions without compile-time
type checking, while C++ casts are more explicit and type-safe.
Changes made:
- static_cast for safe type conversions (e.g., void* to struct*)
- reinterpret_cast for pointer type conversions (e.g., uint8_t* to char*)
- Combined static_cast and reinterpret_cast for integer-to-pointer conversions
Fixed files:
- kmscube/cube-gles2.cpp: GLvoid* casts for OpenGL vertex attribute pointers
- kmscube/cube-wl.cpp: Wayland interface pointer casts
- kmscube/cube-x11.cpp: X11 window handle conversion
- utils/fbtest.cpp: mmap return value cast
- utils/kmstest.cpp: Framebuffer pointer arithmetic
- utils/kmsview.cpp: Framebuffer memory mapping cast
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