Merge commit 'c8ade30036139e32108fee53d8b7164dbfda4bee' into concedo_experimental

# Conflicts:
#	ggml/src/ggml-cuda/CMakeLists.txt
#	ggml/src/ggml-opencl/CMakeLists.txt
#	ggml/src/ggml-opencl/ggml-opencl.cpp
#	ggml/src/ggml-opencl/kernels/im2col_f16.cl
#	ggml/src/ggml-opencl/kernels/im2col_f32.cl
#	ggml/src/ggml-sycl/im2col.cpp
#	tools/mtmd/clip.cpp

tools/mtmd/clip.cpp

@@ -392,7 +392,7 @@ struct clip_ctx {
     std::vector<ggml_backend_buffer_type_t> backend_buft;
 
     ggml_backend_t backend = nullptr;
-    ggml_backend_t backend_cpu;
+    ggml_backend_t backend_cpu = nullptr;
     ggml_backend_buffer_ptr buf;
 
     int max_nodes = 8192;