fixup! sequencer: make reading author-script more elegant

An unfortunate regression of formerly battle-tested code sadly crept
into Git for Windows v2.11.0(2): authorship was not retained in case of
conflicts during picks.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

sequencer.c

@@ -612,7 +612,7 @@ static int read_env_script(struct argv_array *env)
 			count++;
 		}
 
-	for (i = 0; i < count; i++) {
+	for (i = 0, p = script.buf; i < count; i++) {
 		argv_array_push(env, p);
 		p += strlen(p) + 1;
 	}

t/t3404-rebase-interactive.sh

@@ -237,6 +237,22 @@ test_expect_success 'retain authorship' '
 	git show HEAD | grep "^Author: Twerp Snog"
 '
 
+test_expect_success 'retain authorship w/ conflicts' '
+	git reset --hard twerp &&
+	test_commit a conflict a conflict-a &&
+	git reset --hard twerp &&
+	GIT_AUTHOR_NAME=AttributeMe \
+	test_commit b conflict b conflict-b &&
+	set_fake_editor &&
+	test_must_fail git rebase -i conflict-a &&
+	echo resolved >conflict &&
+	git add conflict &&
+	git rebase --continue &&
+	test $(git rev-parse conflict-a^0) = $(git rev-parse HEAD^) &&
+	git show >out &&
+	grep AttributeMe out
+'
+
 test_expect_success 'squash' '
 	git reset --hard twerp &&
 	echo B > file7 &&