sharness/repo: fix pinning test

looks like the test was broken by GC-ing everything.
the pin expects $HASH to still be there.

License: MIT
Signed-off-by: Juan Batiz-Benet <juan@benet.ai>

test/sharness/t0080-repo.sh

@@ -66,6 +66,7 @@ test_expect_success "file no longer pinned" '
 '
 
 test_expect_success "recursively pin afile" '
+	HASH=`ipfs add -q afile` &&
 	ipfs pin add -r "$HASH"
 '