Fix type of dl_info variable in Initialize function

Changed the type of the `dl_info` variable from `Dl_info` to `struct Dl_info` in the `Initialize` function. This ensures compatibility and correctness with the `dladdr` function call.

OctaveMex/octavelibczi.c

@@ -348,7 +348,7 @@ static void Initialize()
 #else
     static const char DllName[] = "libmexlibczi.so";
 
-    Dl_info dl_info;
+    struct Dl_info dl_info;
     if (dladdr((void*)&Initialize, &dl_info) == 0)
     {
         mexErrMsgIdAndTxt("MATLAB:mexlibCZI:dladdrFailed", "Failed to get the handle of the module.");