(imap4d_append0): Skip leading whitespace.

@@ -82,6 +82,9 @@ imap4d_append0 (mailbox_t mbox, int flags, char *text)
       return 1;
     }
 
+  while (*text && isspace (*text))
+    text++;
+
   /* If a date_time is specified, the internal date SHOULD be set in the
      resulting message; otherwise, the internal date of the resulting
      message is set to the current date and time by default. */
@@ -126,4 +129,3 @@ imap4d_append0 (mailbox_t mbox, int flags, char *text)
   return rc;
 }
 
-