[Bugfix][TVMScript] Handle R.match_cast as last binding in if/else #16562
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Prior to this commit, using
R.match_cast
as the last binding would produce a segfault, asvar_binding->value
was used instead ofmatch_cast->value
. In addition, because the last binding of each branch was removed, any changes to the struct info resulting from the match cast were silently discarded.This commit updates the TVMScript parsing of if/else statements to remove the segfault and maintain the struct info changes produced by the
R.match_cast
.