[host1x] Improve FFmpeg error handling (#2643)

This improves the FFmpeg error handling.

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2643
Co-authored-by: MaranBr <maranbr@outlook.com>
Co-committed-by: MaranBr <maranbr@outlook.com>

src/video_core/host1x/vic.cpp

@@ -146,6 +146,11 @@ void Vic::Execute() {
             }
 
             auto frame = frame_queue.GetFrame(nvdec_id, luma_offset);
+
+            if (!frame) {
+                continue;
+            }
+
             if (!frame.get()) {
                 LOG_ERROR(HW_GPU, "Vic {} failed to get frame with offset {:#X}", id, luma_offset);
                 continue;