Apply minor functional improvements

bash/shttpd

@@ -80,13 +80,14 @@ while true; do
           fi
         elif [[ $line = *": "* ]]; then
           hdr_key=${line%%:*} hdr_key=${hdr_key,,}
-          hdr_val=${line#*: } client_req[hdr-$hdr_key]=$hdr_val
+          client_req[hdr-$hdr_key]=${line#*: }
         elif [[ -z $line ]]; then
           req_host=${client_req[hdr-host]-"$HOSTNAME"}
           ver=${client_req[version]} code=${client_resp[code]}
 
           if [[ ${client_req[error]} = yes ]]; then
             client_req[real-file]=./error.html
+            client_resp[has-payload]=yes
           fi
 
           payload=$(<"${client_req[real-file]}")