peel_ref: do not return a null sha1

diff --git a/builtin/mailinfo.c b/builtin/mailinfo.c
index eaf9e157a3897c2442756911b906ff9d3ee2be90..9973bd9099c7b65ad2ce56bb1b1b806279b0beab 100644 (file)
--- a/builtin/mailinfo.c
+++ b/builtin/mailinfo.c
@@ -160,10 +160,9 @@ static int slurp_attr(const char *line, const char *name, struct strbuf *attr)
        const char *ends, *ap = strcasestr(line, name);
        size_t sz;
 
-       if (!ap) {
-               strbuf_setlen(attr, 0);
+       strbuf_setlen(attr, 0);
+       if (!ap)
                return 0;
-       }
        ap += strlen(name);
        if (*ap == '"') {
                ap++;
@@ -232,7 +231,9 @@ static void cleanup_subject(struct strbuf *subject)
                case 'r': case 'R':
                        if (subject->len <= at + 3)
                                break;
-                       if (!memcmp(subject->buf + at + 1, "e:", 2)) {
+                       if ((subject->buf[at + 1] == 'e' ||
+                            subject->buf[at + 1] == 'E') &&
+                           subject->buf[at + 2] == ':') {
                                strbuf_remove(subject, at, 3);
                                continue;
                        }