fix: BSD socket assertion failure in PollImpl

Initialize PollFD.revents field to prevent assertion failures when
copying from read buffer. The assertion was failing because revents
contained uninitialized data from the buffer.

Thanks to Dr.Stug for providing the logs that identified this issue.

Fixes assertion failure at core\hle\service\sockets\bsd.cpp:564

Signed-off-by: Zephyron <zephyron@citron-emu.org>

src/core/hle/service/sockets/bsd.cpp

@@ -546,6 +546,11 @@ std::pair<s32, Errno> BSD::PollImpl(std::vector<u8>& write_buffer, std::span<con
     std::vector<PollFD> fds(nfds);
     std::memcpy(fds.data(), read_buffer.data(), nfds * sizeof(PollFD));
 
+    // Initialize revents to zero to ensure clean state
+    for (PollFD& pollfd : fds) {
+        pollfd.revents = PollEvents{};
+    }
+
     if (timeout >= 0) {
         const s64 seconds = timeout / 1000;
         const u64 nanoseconds = 1'000'000 * (static_cast<u64>(timeout) % 1000);