Ignore leading realm param name if realm type

[stackdump]

Attempting to use Adena w/ latest version 1.17.4

Changes from previous release do seem to properly ignore when the far is named 'cur'.

Some of the example realm code has been using with other names - like '_'

Relevant code here re: https://github.com/onbloc/adena-wallet/pull/749/files#diff-c5356ab4a931c1ccd73a199d08c868c318b69dc2fb3baa1d9bea618f84c67708R91

I think we could ignore any param of realm type.

Alternatively, since I'm seeing useage like func (_ realm) - could we also ignore if var is underscore '_'