fixing small memory leaks

verifier.c

@@ -172,9 +172,9 @@ int verifier_verifymsg(char *buffer) {
     current = &current[ret];
     has_nym = current[0] - '0';
     current = &current[1];
+    bzero(bsn, MAX_BSNSIZE);
 
     if (has_nym) {
-        bzero(bsn, MAX_BSNSIZE);
         strncpy(bsn, current, MAX_BSNSIZE);
         bsn_len = strlen(bsn);
         current = &current[MAX_BSNSIZE];