smtp_authenticate: avoid compiler warnings

diff --git a/lib/smtp.c b/lib/smtp.c
index 8c7b67ae741ed92e31fd04580a9e256dfbab5215..d2ceb58c3cb2f1ba131e2c06d1177999b70c53cc 100644 (file)
--- a/lib/smtp.c
+++ b/lib/smtp.c
@@ -385,6 +385,10 @@ static CURLcode smtp_authenticate(struct connectdata *conn)
 
     /* Check supported authentication mechanisms by decreasing order of
        preference. */
+    mech = (const char *) NULL;         /* Avoid compiler warnings. */
+    state1 = 0;
+    state2 = 0;
+
 #ifndef CURL_DISABLE_CRYPTO_AUTH
     if(smtpc->authmechs & SMTP_AUTH_CRAM_MD5) {
       mech = "CRAM-MD5";