Fixed typo in function name
Fixed typo in function name

mailimap_fetch_att_new_xgmmsgid should be mailimap_fetch_att_new_xgmthrid in this file.
disaykin/libetpan,jjz/libetpan,disaykin/libetpan,disaykin/libetpan,tipbit/libetpan,jjz/libetpan,jjz/libetpan,tipbit/libetpan,tipbit/libetpan