Fix bug in qwk_handle_remaining_votes(): If a QWK packet was not fully imported

(e.g. because the console/terminal server was terminated locally), this routine
would attempt to handle any remaining (unhandled) vote mesages and throw-up
checking "conference number" access=0 invalid=invalid errors
because it was trying to process all the (unhandled) sections in the VOTING.DAT
file rather than just the sections beginning with the applicable section
prefixes ("poll:", "vote:" or "close:"). Every other section is actually just a
hex offset into the MESSAGES.DAT file and does not contain the "Conference"
key that qwk_vote() was expecting to find.

src/sbbs3/qwk.cpp

@@ -1083,8 +1083,12 @@ void sbbs_t::qwk_handle_remaining_votes(str_list_t* ini, smb_net_type_t net_type
 {
 	str_list_t section_list = iniGetSectionList(*ini, /* prefix: */NULL);
 
-	for(int i=0; section_list != NULL && section_list[i] != NULL; i++)
-		qwk_vote(*ini, section_list[i], net_type, qnet_id, /* confnum: */0, hubnum);
+	for(int i=0; section_list != NULL && section_list[i] != NULL; i++) {
+		if(strnicmp(section_list[i], "poll:", 5) == 0
+			|| strnicmp(section_list[i], "vote:", 5) == 0
+			|| strnicmp(section_list[i], "close:", 6) == 0)
+			qwk_vote(*ini, section_list[i], net_type, qnet_id, /* confnum: */0, hubnum);
+	}
 	strListFree(&section_list);
 }