git-gui: Change prior tree SHA-1 verification to use git_read
This cat-file was done on maint, where we did not have git_read available to us. But here on master we do, so we should make use of it. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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@ -258,7 +258,7 @@ proc commit_committree {fd_wt curHEAD msg} {
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# -- Verify this wasn't an empty change.
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#
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if {$commit_type eq {normal}} {
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set fd_ot [open "| git cat-file commit $PARENT" r]
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set fd_ot [git_read cat-file commit $PARENT]
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fconfigure $fd_ot -encoding binary -translation lf
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set old_tree [gets $fd_ot]
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close $fd_ot
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