Don't prevent other exceptions on known architecture

Il2CppInspector/Il2CppBinary.cs

@@ -50,7 +50,7 @@ namespace Il2CppInspector
             // Get type from image architecture
             var type = Assembly.GetExecutingAssembly().GetType("Il2CppInspector.Il2CppBinary" + stream.Arch.ToUpper());
             if (type == null)
-                throw new InvalidOperationException("Unsupported architecture: " + stream.Arch);
+                throw new NotImplementedException("Unsupported architecture: " + stream.Arch);
 
             var inst = (Il2CppBinary) Activator.CreateInstance(type, stream);
 

Il2CppInspector/Il2CppInspector.cs

@@ -182,7 +182,8 @@ namespace Il2CppInspector
                         Console.Error.WriteLine("Could not process IL2CPP image");
                     }
                 }
-                catch (InvalidOperationException ex) {
+                // Unknown architecture
+                catch (NotImplementedException ex) {
                     Console.Error.WriteLine(ex.Message);
                 }
             }