t2407: fix broken &&-chains in compound statement

The breaks in the &&-chain in this test went unnoticed because the
"magic exit code 117" &&-chain checker built into test-lib.sh only
recognizes broken &&-chains at the top-level; it does not work within
`{...}` groups, `(...)` subshells, `$(...)` substitutions, or within
bodies of compound statements, such as `if`, `for`, `while`, `case`,
etc. Furthermore, `chainlint.sed` detects broken &&-chains only in
`(...)` subshells. Thus, the &&-chain breaks in this test fall into the
blind spots of the &&-chain linters.

Signed-off-by: Eric Sunshine <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: sunshineco

t/t2407-worktree-heads.sh

@@ -41,10 +41,10 @@ test_expect_success 'setup' '
 test_expect_success 'refuse to overwrite: checked out in worktree' '
 	for i in 1 2 3 4
 	do
-		test_must_fail git branch -f wt-$i HEAD 2>err
+		test_must_fail git branch -f wt-$i HEAD 2>err &&
 		grep "cannot force update the branch" err &&
 
-		test_must_fail git branch -D wt-$i 2>err
+		test_must_fail git branch -D wt-$i 2>err &&
 		grep "Cannot delete branch" err || return 1
 	done
 '