[PATCH] test: Fix the escaping issue in memory/passt test

[Yumei Huang <yuhuang@redhat.com>]

Test memory/passt failed with error "objsize: No such file or
directory" because of an escaping issue. Fix it.

Link: https://bugs.passt.top/show_bug.cgi?id=155
Signed-off-by: Yumei Huang <yuhuang@redhat.com>
---
 test/memory/passt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/memory/passt b/test/memory/passt
index 7e45724..c5142ea 100644
--- a/test/memory/passt
+++ b/test/memory/passt
@@ -51,7 +51,7 @@ guest	sed /proc/slabinfo -ne 's/^\([^ ]* *[^ ]* *[^ ]* *[^ ]*\).*/\\\1/p' > /tmp
 guest	kill \$(cat /tmp/pid)
 guest	diff -y --suppress-common-lines /tmp/meminfo.before /tmp/meminfo.after || :
 guest	nm -td -Sr --size-sort -P /bin/passt.avx2 | head -30 | tee /tmp/nm.size
-guest	sed /proc/slabinfo -ne 's/\(.*<objsize>\).*$/\1/p' | tail -1; (diff -y --suppress-common-lines /tmp/slabinfo.before /tmp/slabinfo.after | sort -grk8)
+guest	sed /proc/slabinfo -ne 's/\(.*<objsize>\).*$/\\\1/p' | tail -1; (diff -y --suppress-common-lines /tmp/slabinfo.before /tmp/slabinfo.after | sort -grk8)
 endef
 
 def	summary
-- 
2.47.0