imp - Stop early when load fails

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We need to stop early when loading fails.

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Type: imp
Breaking: False
Doc Required: False
Backport Required: False
Part: 1/1

NativeLand/LibraryManager.cs

@@ -114,6 +114,8 @@ internal void LoadNixLibrary(string path)
                 _logger?.LogWarning($"libdl.so may not be found. Trying with libdl.so.2... {ex.Message}");
                 var result = dlopen_new(path, RTLD_LAZY | RTLD_GLOBAL);
                 _logger?.LogInformation(result == IntPtr.Zero ? "FAILED!" : "Success");
+                if (result == IntPtr.Zero)
+                    throw new FileLoadException("Can't load library by this name", path);
             }
         }
 
@@ -124,6 +126,8 @@ internal void LoadWindowsLibrary(string path)
             var cookie = AddDllDirectory(folder);
             var result = LoadLibraryEx(path, IntPtr.Zero, LoadLibraryFlags.LOAD_LIBRARY_SEARCH_APPLICATION_DIR | LoadLibraryFlags.LOAD_LIBRARY_SEARCH_DEFAULT_DIRS | LoadLibraryFlags.LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR | LoadLibraryFlags.LOAD_LIBRARY_SEARCH_SYSTEM32 | LoadLibraryFlags.LOAD_LIBRARY_SEARCH_USER_DIRS);
             _logger?.LogInformation(result == IntPtr.Zero ? "FAILED!" : "Success");
+            if (result == IntPtr.Zero)
+                throw new FileLoadException("Can't load library by this name", path);
         }
 
         #region dlopen