unzip: Bail on bad compression method

contrib/unzip/unzip.c

@@ -1129,7 +1129,7 @@ extern int ZEXPORT unzOpenCurrentFile3 (file, method, level, raw, password)
 
     if ((s->cur_file_info.compression_method!=0) &&
         (s->cur_file_info.compression_method!=Z_DEFLATED))
-        err=UNZ_BADZIPFILE;
+        return UNZ_BADZIPFILE;
 
     pfile_in_zip_read_info->crc32_wait=s->cur_file_info.crc;
     pfile_in_zip_read_info->crc32=0;