t/chainlint/*.test: don't use invalid shell syntax

The chainlint self-test code snippets are supposed to represent the body
of a test_expect_success() or test_expect_failure(), yet the contents of
these tests would have caused the shell to report syntax errors had they
been real test bodies. Although chainlint.sed, with its simplistic
heuristics, is blind to these syntactic problems, a future more robust
chainlint implementation might not have such a limitation, so make these
snippets syntactically valid.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/chainlint/if-then-else.expect

@@ -4,6 +4,7 @@
 ?!AMP?!		echo very
 		echo empty
 	elif test -z ""
+	then
 		echo foo
 	else
 		echo foo &&
@@ -14,6 +15,6 @@
 (
 	if test -n ""; then
 		echo very &&
-?!AMP?!		echo empty
-	if
+		echo empty
+	fi
 >)

t/chainlint/if-then-else.test

@@ -7,6 +7,7 @@
 # LINT: last statement before 'elif' does not need "&&"
 		echo empty
 	elif test -z ""
+	then
 # LINT: last statement before 'else' does not need "&&"
 		echo foo
 	else
@@ -24,5 +25,5 @@
 	if test -n ""; then
 		echo very &&
 		echo empty
-	if
+	fi
 )

t/chainlint/subshell-here-doc.test

@@ -11,7 +11,7 @@
 # LINT: missing "&&" on 'cat'
 	cat <<EOF >bip
 	fish fly high
-	EOF
+EOF
 
 # LINT: swallow here-doc (EOF is last line of subshell)
 	echo <<-\EOF >bop